Terms of use
This page (together with the documents referred to on it) tells you the terms on which you may use the Clean Air in Cities mobile application software, widgets, content, data and service supplied within the software and any updates or supplements to it (‘App’). You should read these ‘Terms of use‘ carefully before you start to use the App.
By using the App or clicking on the ‘I agree’ button, you agree to these Terms of use and that you agree to abide by them. If you do not agree to these Terms of use, you do not have permission to use the App.
1. Information about us and what this agreement does
We Clean Air in London (‘CAL’ or ‘We’), a private company limited by guarantee without share capital using the ‘Limited’ exception registered in England and Wales with company number 07413769 and registered office address Thames House, Mere Park, Dedmere Road, Marlow, Bucks SL7 1PB, license you to use the App, any related electronic documentation (‘Documentation’) as well as any service you connect to via the App and the content we provide to you through it (’Service’) as permitted in these terms.
2. Using the App
In return for you agreeing to comply with these terms you may:
- download or stream a copy of the App onto your device and view, use and display the App and the Service on such device for your personal purposes only.
- use any Documentation to support your permitted use of the App and the Service.
- provided you comply with the ‘Licence restrictions’, make up to one copy of the App and the Documentation for back-up purposes; and
- receive and use any free supplementary software code or update of the App incorporating ‘patches’ and corrections of errors as we may provide to you.
The App is available to android devices and iPads and iPhones running Apple iOS. The version of the App may be upgraded from time to time to provide new functionalities and services. New versions may not be compatible with earlier versions of android or iOS and may not therefore function on older devices.
You may use the App but we reserve the right to withdraw or amend the Service that we provide through the App without notice and indefinitely. We may also suspend or terminate your licence to use the App at our discretion, at any time, without notice to you.
We will not be liable if for any reason the App is unavailable at any time or for any period and you acknowledge and accept that the App is provided over mobile networks and the internet which are outside of our control and may affect the quality or availability of the App.
The App is provided on an ‘as is’ and ‘as available’ basis.
3. Acceptable use restrictions
When using the App, you must comply with the following provisions:
- You may use the App for lawful purposes only.
- You must not use the App: (1) if your use breaches any applicable law or regulation whether local, national or international; (2) if your use is harmful, unlawful or fraudulent; (3) to knowingly introduce or transmit viruses, trojans, worms, logic bombs, keystroke loggers, spyware, adware or other material which is malicious or technologically harmful.
- You must not gain, or attempt to gain, unauthorised access to the App, any server, equipment or database connected to the App.
- You must not attack the App via a denial-of-service attack or a distributed denial-of service attack or do anything that could disable or impair the App.
- If you breach any provisions of the Computer Misuse Act 1990 or applicable legislation you may be committing a criminal offence. We will report any such breach to the relevant law enforcement authorities and we will co-operate with those authorities by disclosing your identity to them.
- You must not infringe our intellectual property rights or those of any third party in relation to your use of the App or any Service.
- Not collect or harvest any information or data from any Service or our Systems or attempt to decipher any transmissions to or from the servers running any Service.
If you breach these terms your right to use the App will cease immediately.
4. Licence restrictions
You also agree:
- not to reproduce, duplicate, copy or re-sell any part of the App or Services in contravention of these Terms of use;
- not to translate, merge, adapt, vary, alter or modify, the whole or any part of the App or Services or any part of them to be combined with, or become incorporated in, any other programs, except as necessary to use the App and Services on devices as permitted in these terms;
- not to dissemble, de-compile, reverse engineer or create derivative works based on the whole or any part of the App or the Services nor attempt to do any such things, except to the extent permitted by law.
- to comply with all applicable technology control or export laws and regulations that apply to the technology used or supported by the App or any Service.
- not to access without authority, interfere with, damage or disrupt: any part of the App; any equipment or network on which the App is stored; any software used in provision of the App; or any equipment or network or software owned or used by any third party.
- to comply with and be bound by CAL’s fair use policy.
These Terms of use also govern your use of the App’s widgets and ‘complications’ which are protected by copyright.
The App and widgets are made available to you provided that you make fair use of them subject to these Terms of use. They may not be used for commercial purposes. CAL reserves the right to change its fair use policy in the future.
5. Intellectual property rights
We are the owner or the licensee of all intellectual property rights in the App, its content and Service including but not limited to the design and arrangement of such content, materials and software and the ‘Air Pollution Alert Index’, ‘Birkett Index’, ‘Clean Air in Cities’, ‘Clean Air in Cities Index’ and ‘Clean Air in London’ which, together with their associated logos, are trademarks or registered trademarks of CAL (the ‘Marks’). You must not use the App or any part of its Content, Service or Marks for commercial purposes without our prior written approval or that of our licensors. Subject to your acceptance of these Terms of use we grant you a non-exclusive, non-transferable licence to download, install and use the App on your iPhone, iPad or android device in accordance with these terms.
6. Reliance on information posted
Please read about the information displayed on the App which is accessed via the ‘About’ button. Commentary, other App Content and Service is not intended to amount to advice on which reliance should be placed. We disclaim all liability and responsibility arising from any reliance placed on such materials by any user of the App, or by anyone who may be informed of any of its Contents. The App Content is provided without any guarantees, conditions or warranties as to its completeness, accuracy and any of the App Content may be out of date at any given time. Any element of the Content of the App which involves an estimate, forecast or prediction should not be relied upon as though it were a statement of fact. To the fullest extent permitted by applicable law, CAL excludes all warranties or representations (express or implied) in respect of the Content of the App. We are under no obligation to update the App or its Contents at any time. Nothing in these Terms of use is intended to detract from your rights (if any) as a consumer.
7. Our liability
We are not liable for business losses. We shall have no liability for any loss of profits, anticipated savings, business opportunity, goodwill or loss of or damage to (including corruption of) data (whether direct or indirect) or any other indirect or consequential losses whether arising in contract, tort (including negligence) or otherwise incurred by any user in connection with the App or in connection with the use, inability to use, or results of the use of the App, any websites linked to it and any materials posted on it.
We do not exclude or limit our liability to you where it would be unlawful to do so. Nothing in these terms shall limit or exclude any liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation or for any other liability which cannot be properly excluded under English law.
We may end your rights to use the App and the Services if you break these terms.
We may end your rights to use the App and Services at any time if you have broken these terms in a serious way. If what you have done can be put right we will give you a reasonable opportunity to do so.
If we end your rights to use the App and Services:
- You must stop all activities authorised by these terms, including your use of the App and any Services.
- You must delete or remove the App from all devices in your possession and immediately destroy all copies of the App which you have and confirm to us that you have done this.
- We may remotely access your devices and remove the App from them and cease providing you with access to the Services.
8. Your privacy
Under data protection legislation, we are required to provide you with certain information including who we are, how we process your personal data and for what purposes and your rights in relation to your personal data and how to exercise them. This information is provided in our Privacy policy.
9. Other terms may apply
App Store and Google Play’s terms also apply.
The ways in which you can use the App may also be controlled by App Store and Google Play’s rules and policies and the App Store and Google Play’s rules and policies will apply instead of these terms where there are differences between the two.
The App is currently provided free of charge for your personal, non-commercial use but you acknowledge that you may be charged by your network provider when using the App. You are solely responsible for such charges.
10. Links from the App
Where the App contains links to websites and resources provided by third parties, these links are provided for your information only. We have no control over the contents of those websites or resources and accept no responsibility for them or for any loss or damage that may arise from your use of them.
11. We may transfer this agreement to someone else
We may transfer our rights and obligations under these terms to another organisation. We will ensure that the transfer will not affect your rights under the agreement.
12. You need our content to transfer your rights to someone else
You may only transfer your rights or obligations under these terms to another person if we agree in writing.
13. No rights for third parties
This agreement does not give rise to any rights under the Contracts (Rights of Third Parties) Act 1999 or any applicable legislation to enforce any term of this agreement.
14. If a court finds part of this contact illegal, the rest will continue in force
Each of the paragraphs of these terms operates separately. If any court or relevant authority decides that any of them are unlawful, the remaining paragraphs will remain in full force and effect.
15. Even if we delay in enforcing this contract, we can still enforce it later
Even if we delay in enforcing this agreement, we can still enforce it later. If we do not insist immediately that you do anything you are required to do under these terms, or if we delay in taking steps against you in respect of your breaking this agreement, that will not mean that you do not have to do those things and it will not prevent us taking steps against you at a later date.
16. Jurisdiction and applicable law
These Terms of use are subject to the laws of England and Wales and the Courts of England shall have jurisdiction over any claim arising from or in relation to them. If you live in Scotland you can bring legal proceedings in the Scottish or the English courts. If you live in Northern Ireland, you can bring legal proceedings in either the Northern Irish or the English courts.
17. Amending the Terms of use
We may revise these Terms of use at any time by amending this page, such change shall be effective immediately on posting to this page. You should check this page from time to time to take notice of any changes that we made, as they are binding on you. If you do not agree with the changes you are not permitted to continue to use the App and the Service.
18. Update to the App and changes to the Service
From time to time, we may automatically update the App and change the Service to improve performance, correct errors, enhance functionality, reflect changes to the operating system or address security issues. Alternatively, we may ask you to update the App for these reasons.
If you choose not to install such updates or if you opt out of automatic updates you may not be able to continue using the App and the Services.
19. Your comments
If you have any comments or suggestions for improving the material which appears on the App, please contact us at cleanair.london/contact.
This version was last updated on 10 November 2025.
Privacy policy
This policy (together with our end-user licence agreement) (‘Terms of use’), together Our Terms and any additional terms incorporated by reference to Our terms, apply to your use of:
- Clean Air in Cities app, mobile application software available at App Store and Google Play and widgets (‘App’) once you have downloaded or streamed a copy of the App onto your mobile telephone or handheld device.
- Any of the services accessible through the App (Service(s)) that are available on the App Site or other sites of ours (Service Sites), unless Our Terms state that a separate privacy policy applies to a particular Service, in which case that privacy policy only applies. This policy sets out the basis on which any personal data we collect from you, or that you provide to us, will be processed by us. Please read the following carefully to understand our practices regarding your personal data and how we will treat it.
This policy is provided in a layered format so you can see the specific areas set out below.
1. Important information and who we are
Clean Air in London (‘CAL’ or ‘We’) are committed to protecting and respecting your privacy. This Privacy Policy sets out the basis on which we may process any personal data that we collect from you, or that you provide to us. Please read this policy carefully.
For the purpose of the applicable data protection legislation, the data controller is Clean Air in London which is a company limited by guarantee, registered in England and Wales, with company number 07413769 and registered office address Thames House, Mere Park, Dedmere Road, Marlow, Bucks SL7 1PB.
2. The personal data that we may collect from you
We may collect and process the following data about you:
- Device Data: includes information about your mobile device such as your IP address. This is statistical data about our users’ browsing actions and patterns and does not identify an individual. We use this information for system administration and may report aggregate information to our supporters.
- Profile Data: includes your interests, preferences, feedback and survey responses.
- Usage Data: includes details of your use of our App or your visits to any of our sites including, but not limited to, traffic data and other communication data, whether this is required for our own billing purposes or otherwise and the resources that you access.
- Location Data: includes your current location disclosed by GPS technology.
- Marketing and Communications Data: includes your preferences in receiving marketing from us and our third parties and your communication preferences. If you choose to receive push notifications, a unique identifier relating to your device will be stored by our data processor on behalf of Clean Air in London to provide you with the service.
We also collect, use and share Aggregated Data such as statistical or demographic data for any purpose. Aggregated Data could be derived from your personal data but is not considered personal data by law as this data will not directly or indirectly reveal your identity. We do not disclose information about identifiable individuals to our supporters, but we may provide them with aggregate information about our users (for example, we may inform them that 430 people from London aged under 30 have used the App on any given data). We may also use such aggregate information to help supporters reach the kind of audience they want to target (for example, men in SW1). We may make use of the personal data we have collected from you to enable us to display our communications to that target audience. We do not collect any Special Categories of Personal Data about you (this includes details about your race or ethnicity, religious or philosophical beliefs, sex life, sexual orientation, political opinions, trade union membership, information about your health and genetic and biometric data). Nor do we collect any information about criminal convictions and offences.
Third party links
If you follow any links from the App to any third party website, please note that these websites have their own privacy policies and that we do not accept any responsibility or liability for these policies or for any personal data that may be collected through these websites or services, such as contact data and location data. Please check these policies before you submit any personal data to these websites or use the services.
3. How is your personal data collected?
We will collect and process the following data about you:
- Information you give us. This is information you consent to giving us by filling in forms or accepting terms on the App Site and the Services Sites (together Our Sites) or by corresponding with us (for example by email or chat). If you contact us, we will keep a record of that correspondence.
- Information we collect about you and your device. Each time you visit one of Our Sites or use our App we will automatically collect personal data including Device and Usage Data. We collect this data using cookies and other similar technologies. Please see our cookie policy below for further details.
- Location data. We may also use device GPS to deliver you location-specific information. If you use the particular feature, you will consent to your data being used for this purpose. You can withdraw your consent at any time by disabling Location Data in your device settings. This may disable the information provided by the App.
- Information we receive from other sources including third parties and publicly available sources. We will receive personal data about you from various third parties as set out below:
- Device data from analytics providers such as Google based outside the UK.
Cookies
A cookie is a small file of letters and numbers that may be stored on your browser or the permanent memory of your device. Cookies contain information that is transferred to your device hard drive to distinguish you from other users.
No data is collected from this App to Clean Air in London. The App’s location mechanism is managed on the device. By default, the App does not include your location in posts on Facebook, X or otherwise. You may choose however to display your location by using the button provided by android or iOS on the post dialog.
If you link from the App to websites then those websites may use cookies and you should read the terms of use and privacy policies of those websites. You acknowledge and accept that we are not responsible for those websites or the cookies that they may use.
If you do not wish cookies to be placed on your device then you can find out how to control or delete cookies. However, if you delete cookies or choose not to allow them you may not be able to access all or parts of a website and your experience may be adversely affected.
4. Uses made of the personal data
We will only use your personal information when the law allows us to do so. Most commonly we will use your personal data in the following circumstances:
- Where you have consented before the processing.
- Where we need to perform a contract we are about to enter or have entered with you.
- Where it is necessary for our legitimate interests (or those of a third party) and your interests and fundamental rights do not override those interests.
- Where we need to comply with a legal or regulatory obligation.
See our Glossary below to find out more about the types of lawful basis that we will rely on to process your personal data.
We will only send you direct marketing communications if we have your consent. You have the right to withdraw that consent at any time by contacting us.
We will get your express opt-in consent before we share your personal data with any third party for marketing purposes.
Purposes for which we will use your personal data
| Purpose/activity | Type of data | Lawful basis for processing |
| To install the App and register you as a new App user | Device | Your consent. |
| To deliver Services | Device. Marketing and Communications. Location | Your consent. Performance of a contract with you Necessary for our legitimate interests |
| To manage our relationship with you including notifying you of changes to the App or any Services | Profile. Marketing and Communications | Your consent. Performance of a contract with you Necessary for our legitimate interests (to keep records updated and to analyse how customers use our Services). Necessary to comply with legal obligations (to inform you of any changes to our terms and conditions) |
| To enable you to complete a survey | Device. Profile. Marketing and Communications | Your consent. Performance of a contract with you. Necessary for our legitimate interests (to analyse how customers use our Services and to develop them and grow our business) |
| To administer and protect our business and this App including troubleshooting, data analysis and system testing | Device | Necessary for our legitimate interests (for running our business, provision of administration and IT services, network security) |
| To deliver content to you.To make recommendations to you about services which may interest you and push notifications to you.To measure and analyse the effectiveness of the content we serve you.To monitor trends so we can improve the App | Content. Profile. Usage. Marketing and Communications. Location | Consent. Consent. Necessary for our legitimate interests (to develop our products/Services and grow our business) |
5. Disclosure of your personal data
We may disclose your personal information to any member of our group, which means subsidiaries, ultimate holding company and any subsidiaries, as defined in section 1159 of the UK Companies Act 2006.
We may disclose your personal information to third parties:
- who are service providers and are acting as our processors as follows:
- Google, based in the U.S. which provides us with Google Analytics; and
- Google, based in the U.S. which provides us with Firebase Analytics and Crash Reporting.
- In the event that we sell or buy any business or assets, in which case we may disclose your personal data to the prospective seller or buyer of such business or assets.
- If our company, or substantially all of our assets, are acquired by a third party, in which case personal data held by us about our customers will be one of the transferred assets.
- If we are under a duty to disclose or share your personal data in order to comply with any legal obligation, or in order to enforce or apply our Terms of use and other agreements; or to protect the rights, property, or safety of us, our customers, or others. This includes exchanging information with other companies and organisations for the purposes of fraud protection and credit risk reduction.
6. International transfers
Many of our external third parties are based outside the UK so their processing of your personal information will involve a transfer of data outside the UK.
Whenever we transfer your personal data out of the UK, we ensure a similar degree of protection is afforded to it by ensuring at least one of the following safeguards is implemented:
- We will only transfer your personal data to countries that have been deemed to provide an adequate level of protection for personal data.
- Where we use certain service providers, we may use specific contracts approved by the UK which give personal data the same protection it has in the UK.
Please contact us if you want further information on the specific information used by us when transferring your personal data out of the UK.
7. Where we store your personal data
Your data will remain within the United Kingdom (‘UK’) and the European Economic Area (‘EEA’) on our secure servers except where we may transfer some limited personal data to the United States of America (see above). It may also be processed by staff operating outside the EEA who work for us or for one of our suppliers. Such staff maybe engaged in, among other things, the provision of support services. By submitting your personal data, you agree to this transfer, storing or processing. We will take steps reasonably necessary to ensure that your data is treated securely and in accordance with this Privacy Policy.
Once we have received your information, we will use strict procedures and security features to try to prevent your personal data from being accidentally lost, used or accessed in an unauthorised way.
In some circumstances you can ask us to delete your data: see ‘Your legal rights’ below for further information.
8. Data retention
We will retain your personal data for as long as required by law or necessary for our purposes.
In some circumstances you can ask us to delete your data: see ‘Your legal rights’ below for further information.
In some circumstances we will anonymise your personal data (so that it can no longer be associated with you) for research or statistical purposes, in which case we may use this information indefinitely without further reference to you.
9. Your rights
Under certain circumstances you have the following rights under data protection laws in relation to your personal data:
- Request access to your personal data (commonly known as a “data subject access request”). This enables you to receive a copy of the personal data we hold about you to check that we are lawfully processing it.
- Request correction of your personal data that we hold about you. This enables you to have any incomplete or inaccurate data we hold about you corrected, though we may need to verify the accuracy of the new data you provide to us.
- Request erasure of your personal data. This enables you to ask us to delete or remove personal data where there is no good reason for us to continuing to process it. You also have the right to ask us us to delete or remove your personal data where you have successfully exercised your right to object to processing (see below), where we may have processed your information unlawfully or where we are required to erase your personal data to comply with local law. Note, however, that we may not always be able to comply with your request for erasure for specific legal reasons which will be notified to you, if applicable, at the time of your request.
- Object to processing of your personal data where we are relying on a legitimate interest (or those of a third party) and there is something about your particular situation which makes you want to object to processing on this ground as you feel it impacts on your fundamental rights and freedoms. You also have the right to object where we are processing your personal data for direct marketing purposes. In some cases, we may demonstrate that we have compelling legitimate grounds to process your information which override your rights and freedoms.
- Request restriction of processing your personal data. This enables you to ask us to suspend the processing of your personal data in the following scenarios:
- if you want us to establish the data’s accuracy;
- where the use of the data is unlawful but you do not want us to erase it;
- where you need us to hold the data even if we no longer require it as you need it to establish, exercise or defend legal claims; or
- you have objected to our use of your data but we need to verify whether we have overriding legitimate grounds to use it.
- Request transfer of your personal data to you or to a third party. We will provide you, or a third party you have chosen, your personal data in a structured, commonly used, machine-readable format. Note that this right only applies to automated information which you initially provided to consent for us to use or where we used the information to perform a contract with you.
- Right to withdraw consent where we are relying on consent to process your personal data. However, this will not affect the lawfulness of any processing carried out before you withdraw your consent. If you withdraw your consent, we may not be able to provide certain products or services to you. We will advise you if this is the case at the time your withdraw your consent.
You also have the right to ask us not to continue to process your personal data for marketing purposes.
We will usually inform you (before collecting your data) if we intend to use your data for such purposes or if we intend to disclose your information to any third party for such purposes. You can exercise your right to prevent such processing by accepting terms or ticking certain boxes on forms we use to collect your data.
You can also exercise the right at any time by contacting us at our registered office: Thames House, Mere Park, Dedmere Road, Marlow, Bucks SL7 1PB.
Access to information
If you make an access request we may charge you a fee of £50 to cover our costs in providing you with details of the information we hold about you.
10. Changes to our privacy policy
Any changes that we may make to our Privacy Policy in the future will be posted on this page, such change shall be effective immediately on posting to this page. You should check back from time to time, as they are binding on you and, where appropriate, notified to you when you next start the App. The new policy may be displayed on-screen and you may be required to read and accept the changes to continue your use of the App or the Services.
11. Contact
If you have any questions about this Privacy Policy, please contact us at: Clean Air in London, Thames House, Mere Park, Dedmere Road, Marlow, Bucks SL7 1PB.
Glossary
Device Data: includes type of mobile device you use, a unique device identifier, mobile network information, your mobile operating system, type of mobile browser used and time zone setting.
Content Data: includes information stored on your Device.
Profile Data: includes your username and password, your interests, preferences, feedback and survey responses.
Usage Data: Marketing and Communications Data: includes your preferences in receiving marketing from us and our third parties and your communication preferences.
Location Data: includes your current location disclosed by GPS technology.
This version was last updated on 10 November 2025.
