Privacy Policy

Breathe Battery Technologies Limited | Last updated: 2nd July 2026
Company number: 11997339 | Registered office: Office 7, 35-37 Ludgate Hill, London EC4M 7JN
ICO Registration: ZB723037 | Contact: Submit a request via our privacy contact form below.


This privacy policy sets out how Breathe Battery Technologies Limited (we / us / our) uses and protects your personal data. This policy applies to personal data we collect or process when you: (i) visit or interact with our website, breathebatteries.com; (ii) create an account for, access, or use our customer platform through which users can access our services (the Platform); (iii) visit or interact with our Documentation site, docs.breathebatteries.com (iv) contact us by email, through our website contact form, or through other communications; or (v) otherwise interact with us in connection with our products or services.

Our website is primarily intended for business users, including employees or representatives of organisations interested in our battery technology solutions. However, it may also be accessed by individual visitors such as industry professionals, researchers, or job applicants. This website is not intended for children and we do not knowingly collect data relating to children.
The Platform is intended for authorised users of our business customers.

1. Data protection law

We will only process your personal data in line with data protection laws, including the UK General Data Protection Regulation (UK GDPR) and any applicable laws, regulations, and other legal requirements relating to privacy, data security, and protection of personal data.

We are registered with the Information Commissioner’s Office (ICO), the UK supervisory authority for data protection issues (ico.org.uk), and our ICO registration number is ZB723037.

If you have any concerns about data protection, we would appreciate if you submitted the form below before you approach the ICO.

2. The types of data we collect

Personal data means any information that can identify an individual. It does not include data where the identity has been removed (anonymous or aggregated data). Where data has been pseudonymised – that is, where identifying details have been reduced but an individual may still be identifiable via information we hold, such as an account identifier – this remains personal data and is treated accordingly. 

We may collect and process the following categories of data:

  • Identity Data – Full name, title, job title, employer, user ID or account identifier.
  • Contact Data – Email address, telephone number, billing address, delivery address, work address.
  • Technical Data – Internet protocol (IP) address, browser type and version, device information, time zone setting, operating system and other technology used to access our website.
  • Platform Usage Data – Information relating to your use of the Platform, including application programming interface (API) requests made through the Platform, system activity logs, and operational usage information. Detailed API call logs are retained for a limited period, after which individual call detail is removed and a pseudonymised usage count is retained and linked to your account. 
  • Simulation Data – data generated through your use of the Platform’s simulation or analysis tools, including output data produced from API requests. This data may not identify you on its own but may be associated with your account, API credentials, or other identifiers linked to you.
  • Profile Data – Your username and password, purchases or orders, interests, preferences, feedback and survey responses.
  • Usage Data – Information about how you use our website, Platform and services, including navigation behaviour and interaction data.
  • Marketing and Communications Data – Your preferences in receiving marketing from us and your communication preferences.
  • Aggregated Data – Statistical or demographic data generated from personal data that does not identify individuals.

We also collect, use and share aggregated data such as statistical or demographic data which is not personal data as it does not directly (or indirectly) reveal your identity. For example, we may aggregate individuals’ Usage Data to calculate the percentage of users accessing a specific website feature in order to analyse general trends in how users are interacting with our website to help improve the website and our service offering.

3. How we collect personal data

Direct interactions

You may give us your Identity Data and Contact Data by filling in forms or by corresponding or engaging with us by post, phone, email, social media or otherwise. This includes personal data you provide when you submit enquiries through our website contact form, subscribe to newsletters or marketing communications, request information about our services, or otherwise contact us.

Platform account registration and use

If you access our Platform, we collect certain information required to provide and operate the Platform and deliver our services. This may include account authentication information, including your email address, user identifiers used to link your account with the Platform, records of API requests made through the Platform, and output or Simulation Data. When you create or access a Platform account, authentication and identity management services are provided through our identity service provider, Auth0, which processes your email address and account identifiers in order to securely manage login and access to the Platform. We may also collect technical logs relating to Platform activity for the purposes of operating, securing and improving the Platform.

Automated technologies or interactions

As you interact with our website, we will automatically collect Technical Data about your equipment, browsing actions and patterns. We collect this personal data by using cookies, server logs and other similar technologies. We may also receive Technical Data about you if you visit other websites employing our cookies.

Third parties or publicly available sources

We may receive personal data about you from various third parties and public sources, such as Google, Companies House, the electoral register, or professional networking platforms such as LinkedIn. We may also receive certain technical or account-related information from service providers that support the operation of our website or Platform, including identity management providers, hosting providers, analytics services, and customer relationship management platforms.

4. How we use your personal data

Whenever we collect personal data about you, we must have a legal ground (lawful basis) to do so. These include:

  • Contract – Where we need to perform the contract we are about to enter into or have entered into with you.
  • Legitimate Interests – 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. We rely on this basis where it is necessary to operate and improve our business, including preventing fraud, maintaining the security of our website and Platform, and improving our products and services. Where we rely on legitimate interests, we assess the potential impact on you and your rights and ensure that those interests are not overridden.
  • Legal Obligation – Where we need to comply with a legal obligation.
  • Consent – we rely on your consent only where we have obtained your active agreement to use your personal data for a specified purpose, for example if you subscribe to an email newsletter.

5. Purposes for which we’ll use your personal data

Purpose/ActivityType of DataLawful BasisExplanation
To enable you to submit an enquiry (email, website, social media incl. LinkedIn, Facebook & Instagram)Identity
Contact
Contract
Legitimate Interests
To enable us to respond to your enquiry
To process & deliver services including: (a) manage payments, fees & charges (b) collect & recover money owedIdentity
Contact
Marketing & communications
Contract
Legitimate Interests
To enable us to provide our services to you
To manage our relationship with you including: (a) notifying you about changes to terms & conditions or this policy (b) asking you to leave a review or take a surveyIdentity
Contact
Profile
Marketing & communications
Contract
Legal Obligation
Legitimate Interests
To keep our records updated & to study how customers use our services
To enable you to register for our mailing list/email marketingIdentity
Contact
Marketing & communications
Contract
Legitimate Interests
To provide you with newsletter/email marketing & present information or services we consider you will be interested in
To administer & protect our business & website (incl. troubleshooting, data analysis, testing, system maintenance, support, reporting & hosting)Identity
Contact
Technical Usage
Legitimate Interests
Legal Obligation
Running our business, IT services, network security, fraud prevention, business reorganisation or restructuring
To deliver relevant website content & advertisements to you & measure or understand the effectiveness of the advertising we serveIdentity
Contact
Profile Usage
Marketing & communications Technical
Legitimate InterestsTo study how customers use our services, develop them, grow our business & inform our marketing strategy
To use data analytics to improve our website, services, marketing, customer relationships & experiencesTechnical
Usage
Legitimate InterestsTo define customer types, keep website updated & inform development and marketing
To make suggestions & recommendations to you about goods or services that may be of interest to youIdentity
Contact
Technical
Usage
Profile
Marketing & communications
Legitimate InterestsTo develop our products/services & grow our business
To register and authenticate users on our PlatformIdentity
Contact
Technical
Contract
Legitimate Interests
To enable authorised users of our customers to securely access and use the Platform, including identity verification and account authentication
To operate and provide functionality of the Platform including processing API requests and generating simulation outputsIdentity
Platform Usage
Simulation
Technical
Contract
Legitimate Interests
To deliver the services available through the Platform, including processing API requests, recording user activity within the Platform (such as simulations or analyses initiated by a user), and generating simulation or analysis outputs associated with the relevant user account in order to provide the service.
To monitor, maintain and secure the Platform including logging system activityIdentity
Platform Usage
Technical
Legitimate InterestsTo maintain Platform security, monitor system performance, investigate errors, analyse system activity (including API requests), and detect and prevent misuse of the Platform. A pseudonymised count of total API usage per user is retained beyond the detailed log period for these purposes.
To understand how visitors use our website and improve website performanceTechnical
Usage
Legitimate Interests
Consent
To analyse website traffic and user behaviour, improve website functionality and performance, and understand how visitors interact with our website
To measure the effectiveness of advertising campaigns and optimise marketing activitiesTechnical
Usage
Marketing & communications
Contact
Legitimate Interests
Consent (where cookies or tracking technologies are used)
To measure engagement with advertising campaigns and improve marketing performance, including interaction with advertising and analytics platforms.
We may also use certain contact information (such as email address or company information) to create or match advertising audiences on third-party platforms in order to measure advertising effectiveness, deliver relevant advertising, or suppress advertising to existing customers.
To use AI assistant tools to help process, analyse, draft and summarise personal data in connection with our sales, customer management, business development and internal operations Identity 
Contact 
Profile 
Marketing & Communications 
Legitimate Interests We use AI productivity tools to assist our teams with tasks such as drafting proposals and communications, summarising meetings and interactions, and researching potential business partners. Where we do so, those tools act as data processors under a Data Processing Agreement and do not use your personal data to train AI models. You have the right to object to this processing at any time by contacting us via the form below. 

6. Marketing

You may receive marketing communications from us if you have requested information from us or purchased services from us and you haven’t opted out of receiving that marketing.

We may also analyse your Identity, Contact, Technical, Usage and Profile Data to form a view which products, services and offers may be of interest to you so that we can then send you relevant marketing communications.

You can ask us or third parties to stop sending you marketing messages at any time by following the opt-out links on any marketing communication sent to you or by contacting us at any time.

If you opt out of receiving marketing communications, you will still receive service-related communications that are essential for administrative or customer service purposes.

We may also use certain Contact Data (such as your email address, name, or company information) to create or match advertising audiences on third-party advertising platforms. This allows us to measure the effectiveness of advertising campaigns, deliver relevant advertising, and avoid showing advertising to existing customers where appropriate. You can opt out of marketing communications or object to processing for marketing purposes at any time.

7. Email communications and tracking

We may use tracking technologies in some of our emails to understand how recipients interact with our communications. This may include information about whether an email was opened, the time and date it was opened, the email client or device used, IP address (which may indicate location), and links clicked within the email.

This information helps us understand the effectiveness of our communications and improve our marketing and outreach activities.

For marketing emails, we rely on your consent to send the email and to measure engagement where required. For business-to-business communications, we may rely on legitimate interests in communicating with potential customers and understanding the effectiveness of our outreach.

Email engagement data may be processed using our customer relationship management and marketing platform.

You can opt out of email tracking at any time by clicking the unsubscribe link in our marketing emails or by submitting the form below.

If you are communicating directly with a member of our sales team, you may request that email tracking be disabled by informing the team member you are corresponding with or by contacting us via the form below.

8. International data transfers

We may transfer your personal data to service providers that carry out certain functions on our behalf. This may involve transferring personal data outside the UK to countries which have laws that do not provide the same level of data protection as the UK law. Where this occurs, we ensure a similar degree of protection is afforded to it by ensuring that the following safeguards are in place:

  • We will only transfer your personal data to countries that have been deemed by the UK to provide an adequate level of protection for personal data; or
  • We may use standard contractual terms approved for use in the UK which give the transferred personal data the same protection as it has in the UK, namely the International Data Transfer Agreement or the International Data Transfer Addendum to the European Commission’s standard contractual clauses for international data transfers.
  • To obtain a copy of these contractual safeguards, please contact us via the form below.

9. Data security

We have put in place appropriate security measures to prevent your personal data from being accidentally lost, used or accessed in an unauthorised way, altered or disclosed. Access to personal data is limited to those who have a business need to know. They will only process your personal data on our instructions and they are subject to a duty of confidentiality.

We have put in place procedures to deal with any suspected personal data breach and will notify you and any applicable regulator of a breach where we are legally required to do so.

10. Data retention

We will only retain your personal data for as long as reasonably necessary to fulfil the purposes we collected it for, including for the purposes of satisfying any legal, regulatory, tax, accounting or reporting requirements. We may retain your personal data for a longer period in the event of a complaint or if we reasonably believe there is a prospect of litigation in respect to our relationship with you.

To determine the appropriate retention period for personal data, we consider the amount, nature and sensitivity of the personal data, the potential risk of harm from unauthorised use or disclosure of your personal data, the purposes for which we process your personal data and whether we can achieve those purposes through other means, and the applicable legal, regulatory, tax, accounting or other requirements.

By law we have to keep basic information about our customers (including Contact, Identity, Financial and Transaction Data) for six years after they cease being customers for tax purposes.

11. Sharing personal data

We may share your personal data with trusted third party service providers including:

  • Analytics providers
  • Advertising platforms
  • AI assistant and productivity platforms
  • Website hosting providers
  • IT infrastructure providers
  • Email and marketing platforms
  • Professional advisors such as auditors or lawyers
  • Cloud infrastructure and platform hosting providers
  • Identity and authentication service providers
  • System monitoring and security providers

All service providers are required to process personal data securely and in accordance with applicable laws. We do not allow our third-party service providers to use your personal data for their own purposes and only permit them to process your personal data for specified purposes and in accordance with our instructions.

We may also disclose your personal data where necessary to comply with a legal obligation, to the rights, property or safety of our business or others, to prevent fraud or credit risk, or in connection with a sale, transfer or merger of all or part of our business. If a change happens to our business, then the new owners may use your personal data in the same way as set out in this privacy policy. We will otherwise not sell, distribute or lease your personal information to third parties unless we have your permission, and except as described in this privacy policy.

12. Cookies

Our website uses cookies to distinguish you from other users of our website. This helps us to provide you with a good experience when you browse our website and also allows us to improve our site. A Cookie is a file of letters and numbers that we store on your browser or hard drive of your computer if you agree. Cookies contain information that is transferred to your computer’s hard drive.
We use the following cookies:

  • Strictly necessary cookies – required for the operation of our website. These essential cookies are always enabled because our website won’t work properly without them. You can switch off these cookies in your browser settings but you may then not be able to access all or parts of our website.
  • Functionality cookies – these are used to recognise you when you return to our website. This enables us to personalise our content for you, greet you by name and remember your preferences (for example, your choice of language or region).
  • Analytical or performance cookies – these help us understand how many visitors use our website and how visitors move around our website when they are using it. This helps us to improve the way our website works, for example, by ensuring that users are finding what they are looking for easily.
  • Targeting cookies – used to measure advertising performance and, where enabled, support relevant advertising on third-party platforms.

Please note that third parties may also use cookies, over which we have no control. These named third parties may include, for example, advertising networks and providers of external services like web traffic analysis services. These third-party cookies are likely to be analytical cookies or performance cookies or targeting cookies:

  • Google Analytics – a web analytics service provided by Google, Inc that helps us understand how visitors interact with our website, including page views, navigation behaviour and approximate location information. Google Analytics stores your IP address anonymously. Google does not associate your IP address with any personally identifiable information.
  • Google Ads – used to measure the effectiveness of advertising campaigns and to understand how users interact with advertisements.
  • LinkedIn Insight Tag – used to measure engagement with advertising campaigns and understand how visitors interact with our website following interactions with LinkedIn content or advertising.
  • Reddit Pixel – used to measure advertising performance and understand interactions with advertisements displayed on the Reddit platform.
  • Hotjar – used to analyse how users interact with the website through aggregated usage insights and behavioural analytics.
  • HubSpot – used to support customer relationship management and marketing activities, including tracking interactions with website forms and communications.
  • Embedded media providers (such as YouTube, Wistia) – embedded content may set cookies to enable video playback and measure engagement with embedded media.

We will always ask for your consent to use non-essential cookies. You are free to withhold consent to this, but it means that we might not be able to provide the full website experience to you, including some elements of video advertising. If at any time you wish to disable our cookies, you can do so through the settings on your browser, or whenever the pop-up appears on the website (each time you access the website).

Except for essential cookies, we will only retain analytics cookie data for up to 12 months, and marketing or advertising cookies for up to 24 months, unless consent is withdrawn earlier.

13. Links to other websites

Our website may contain links to other websites of interest. Once you have used these links to leave our site, we do not have any control over that other website. You should exercise caution and look at the privacy policy applicable to the website in question.

14. Your rights

You have a number of rights under data protection laws in relation to your personal data. You have the right to:

  • Request access to your personal data (subject access request).
  • Request correction of the personal data that we hold about you.
  • Request erasure of your personal data in certain circumstances.
  • Object to processing of your personal data.
  • Request restriction of processing of your personal data.
  • Request the transfer of your personal data to you or to a third party.
  • Withdraw consent where processing is based on consent.

To exercise any of your rights, please contact us via the form below. You won’t have to pay a fee to access your personal data (unless your request is clearly unfounded, repetitive or excessive). We try to respond to all legitimate requests within one month.

15. Get in touch

If you have any questions or concerns about this privacy policy or our treatment of your personal data, please contact:

Breathe Battery Technologies Limited
FAO: Privacy Officer
Breathe Battery Technologies
G01 Lincoln House
1-3 Brixton Road
London
SW9 6DE
United Kingdom

Or submit a request using the form below:

16. Complaints about how we handle your personal data

If you have concerns about how we handle your personal data, you have the right to complain to us. You can:  

  • Write to us at our London office (address above) 

Please include as much detail as possible about your concern so we can look into it.  

We will: 

  • Acknowledge receipt of your complaint within 30 days; 
  • Take appropriate steps to investigate, including making any enquiries needed, without undue delay; 
  • Keep you informed of the progress of your complaint; and 
  • Tell you the outcome without undue delay. 

We may contact you for further information where we need it to resolve your complaint.  

You also have the right to complain to the Information Commissioner’s Office (ICO). The ICO normally expects you to raise your concern with us first and may decline to look into a complaint you haven’t put to us, so please contact us before approaching the ICO. You can find the ICO’s contact details at ico.org.uk. 

17. Changes to the privacy policy and your duty to inform us

We keep our privacy policy under regular review.

It is important that the personal data we hold about you is accurate and current. Please keep us informed if your personal data changes during your relationship with us, for example a new address or email address.

Submit a request