Legal
This page contains the legal documents governing use of the Fifty One Degrees website. Use the navigation to jump to a section.
Fifty One Degrees AI Limited is registered in England and Wales (company number 15624222), with its registered office at 167-169 Great Portland Street, 5th Floor, London W1W 5PF.
Questions? Email hello@51d.co.
Terms of Use
Last updated: 25 June 2026
These terms govern your use of the Fifty One Degrees website at www.51d.co (the “Site”). By using the Site you agree to them. If you do not agree, please stop using the Site.
These terms cover the marketing website only. They do not apply to client engagements, which are governed by separate contracts, or to the Fifty One Degrees product platform at app.51d.ai, which has its own terms.
Who we are
The Site is operated by Fifty One Degrees AI Limited, a company registered in England and Wales (company number 15624222), with its registered office at 167-169 Great Portland Street, 5th Floor, London W1W 5PF. You can contact us at hello@51d.co.
Using the Site
You may use the Site for your own informational purposes. You must not:
- use the Site in any way that breaches applicable law or regulation
- copy, reproduce, or redistribute Site content for commercial purposes without our written permission
- use automated tools to scrape, index, or extract content from the Site at scale without our consent
- attempt to gain unauthorised access to any part of the Site or its underlying systems
- use the Site to transmit unsolicited communications or malicious code
Intellectual property
All content on the Site, including text, graphics, logos, and code, is owned by or licensed to Fifty One Degrees AI Limited and is protected by UK and international intellectual property laws. Nothing on the Site transfers any intellectual property rights to you.
You may share links to the Site and quote brief excerpts for commentary or journalism, provided you clearly attribute the source.
Not professional advice
The content on this Site, including blog posts, articles, frameworks, and case studies, is for general information only. It does not constitute professional advice on AI implementation, data strategy, technology procurement, legal matters, or any other subject. You should not rely on it as a substitute for advice specific to your circumstances from a qualified professional. Fifty One Degrees AI Limited accepts no liability for any action taken or not taken in reliance on content published on this Site.
Third party links
The Site may contain links to third party websites. Fifty One Degrees AI Limited is not responsible for the content, accuracy, or privacy practices of any third party site, and the inclusion of a link does not indicate endorsement.
Disclaimer of warranties
The Site is provided “as is.” To the fullest extent permitted by law, Fifty One Degrees AI Limited makes no warranties, express or implied, regarding the Site’s availability, accuracy, completeness, or fitness for any particular purpose. We do not warrant that the Site will be uninterrupted or free from errors.
Limitation of liability
To the fullest extent permitted by law, Fifty One Degrees AI Limited will not be liable for any indirect, consequential, incidental, or special loss arising from your use of, or inability to use, the Site (including loss of data, profits, revenue, business, or goodwill), whether in contract, tort (including negligence), breach of statutory duty, or otherwise. Our total liability to you in connection with the Site, to the extent not excluded by law, is limited to £100.
Nothing in these terms excludes or limits liability for death or personal injury caused by negligence, for fraud or fraudulent misrepresentation, or for any other liability that cannot legally be excluded or limited.
Changes to these terms
We may update these terms at any time. The current version will always be available at this page, with the date of the most recent update shown above. Continued use of the Site after any update constitutes your acceptance of the revised terms.
Governing law
These terms are governed by English law. Any dispute arising from or in connection with them is subject to the exclusive jurisdiction of the courts of England and Wales.
Privacy Policy
Last updated: 25 June 2026
This Privacy Policy explains how Fifty One Degrees AI Limited collects, uses, and protects personal information when you use this Site.
Fifty One Degrees AI Limited (referred to as “Fifty One Degrees,” “we,” “us,” or “our”) is registered in England and Wales (company number 15624222), with its registered office at 167-169 Great Portland Street, 5th Floor, London W1W 5PF. We are registered with the Information Commissioner’s Office under registration number C1482555.
We are the data controller in respect of personal information collected through this Site. If you have questions about this policy or how we handle your data, email hello@51d.co.
What information we collect
Information you give us directly:
- Your name and email address when you complete the contact form or book a discovery call via Calendly
- Any additional information you choose to include in the body of an enquiry
Information collected automatically:
- Your IP address, browser type, device type, and operating system
- Pages visited, time on Site, and referral source, collected via Google Analytics
- Technical security data collected by Cloudflare, including IP address, for bot management and DDoS protection
How we use your information
| Purpose | Lawful basis under UK GDPR |
|---|---|
| Responding to enquiries submitted via the contact form | Legitimate interests: handling pre-contractual communications and responding to requests from prospective clients |
| Managing Calendly bookings and discovery calls | Steps taken at your request prior to entering a contract |
| Understanding how visitors use the Site and improving it | Legitimate interests in analysing Site performance (applied only where you have consented to analytics cookies under UK PECR) |
| Keeping the Site secure and preventing misuse | Legitimate interests in maintaining the security of our systems |
| Sending marketing communications where you have opted in | Consent |
We do not use your personal data for automated decision-making or profiling.
Where we rely on legitimate interests, we have assessed that those interests are not overridden by your rights and interests, taking into account the limited nature of the data involved and the reasonable expectations of visitors to a professional services website.
Who we share your information with
We share personal data with the following processors only to the extent necessary to operate the Site:
| Provider | Purpose | Transfer safeguard |
|---|---|---|
| Google Analytics (Google LLC) | Website analytics | EU-US Data Privacy Framework |
| Calendly LLC | Booking management | EU-US Data Privacy Framework |
| Cloudflare Inc. | CDN, security, performance | EU-US Data Privacy Framework and Standard Contractual Clauses |
| Vercel Inc. | Website hosting | Standard Contractual Clauses |
We do not sell your personal data. We do not share it with third parties for their own marketing purposes.
We may disclose personal data where required by applicable law, court order, or regulatory request, and to protect the rights, property, or safety of Fifty One Degrees AI Limited, our clients, or others.
If Fifty One Degrees AI Limited is acquired by or merged with another company, personal data held by us may be transferred to the new owner as part of that transaction. We would notify you via this policy before any such transfer were to take effect.
How long we keep your information
| Data category | Retention period |
|---|---|
| Contact form enquiries | 2 years from receipt, or for the duration of any resulting engagement, whichever is longer |
| Calendly booking records | 1 year from the date of the call |
| Google Analytics data | 14 months (as configured in our GA4 account) |
| Security and server logs | 90 days |
When data is no longer needed, we delete it securely or anonymise it.
Your rights
Under UK GDPR, you have the right to:
- Access: request a copy of the personal data we hold about you
- Rectification: ask us to correct inaccurate or incomplete data
- Erasure: ask us to delete your data in certain circumstances
- Restriction: ask us to restrict processing in certain circumstances
- Objection: object to processing based on legitimate interests
- Portability: receive your data in a structured, machine-readable format in certain circumstances
- Withdraw consent: where processing is based on consent, withdraw it at any time without affecting the lawfulness of prior processing
To exercise any of these rights, email hello@51d.co. We will respond within one calendar month. In complex cases we may extend this by a further two months; if so, we will let you know.
You also have the right to lodge a complaint with the UK’s supervisory authority, the Information Commissioner’s Office (ICO), at ico.org.uk or by calling 0303 123 1113.
Cookies
We use cookies on this Site. For full details of which cookies we use, why, and how to manage your preferences, see the Cookie Policy below, or jump to Cookie Policy.
Security
We take appropriate technical and organisational measures to protect your personal data, including encrypted connections (HTTPS), access controls, and the use of reputable, contractually bound processors. No method of transmission over the internet is entirely secure. We cannot guarantee absolute security, but we will notify you and the ICO of any personal data breach as required by law.
Third party links
This Site contains links to third party websites. We are not responsible for the privacy practices of those sites. We recommend reviewing their privacy policies before sharing any personal information.
Changes to this policy
If we make material changes to this policy, we will update the date at the top of this section and, where appropriate, notify you directly. The current version will always be available at this page. We will not process your data in a materially different way without giving you appropriate notice and, where required by law, obtaining your consent.
Cookie Policy
Last updated: 25 June 2026
This Cookie Policy explains what cookies are, which cookies Fifty One Degrees AI Limited uses on www.51d.co, and how you can manage them. Read it alongside our Privacy Policy above.
What are cookies?
Cookies are small text files stored on your device when you visit a website. They serve different purposes: some are essential for the site to work, others help us understand how visitors use the site, and others provide security and performance functions.
Legal basis for cookies
Under the UK Privacy and Electronic Communications Regulations (PECR), we may only place non-essential cookies on your device with your prior informed consent. We use a cookie consent banner to collect that consent when you first visit the Site. You can review and update your preferences at any time using the “Cookie settings” link in the footer.
Strictly necessary cookies are exempt from this requirement and are placed without asking for consent, as they are required for the Site to operate.
Cookies we use
Strictly necessary
These cookies are required for the Site to operate. They cannot be disabled.
| Cookie | Provider | Duration | Purpose |
|---|---|---|---|
| 51d_consent | Fifty One Degrees (first party) | 1 year | Stores your cookie consent preferences so they are respected on return visits |
| __cf_bm | Cloudflare | 1 hour | Cloudflare bot management: distinguishes human visitors from automated traffic |
| _cfuvid | Cloudflare | Session | Cloudflare rate limiting and abuse prevention |
| cf_clearance | Cloudflare | 1 year | Stores verification that a Cloudflare security challenge was passed |
Analytics (require consent)
These cookies help us understand how visitors interact with the Site. They are only set if you accept analytics cookies.
| Cookie | Provider | Duration | Purpose |
|---|---|---|---|
| _ga | Google Analytics | 13 months | Assigns a unique identifier to distinguish visitors; used to calculate visit, session and campaign data |
| _ga_SD037FT4MJ | Google Analytics | 13 months | Stores and counts page views for this specific GA4 property |
Functional (require consent)
These cookies are set when pages with embedded video are visited and functional cookies have been accepted.
| Cookie | Provider | Duration | Purpose |
|---|---|---|---|
| vuid | Vimeo | 13 months | Assigns a unique ID to track Vimeo video plays across sessions |
| aka_debug | Vimeo | Session | Vimeo internal debugging for video playback |
| CONSENT | YouTube | 2 years | Stores YouTube consent state for embedded videos |
| VISITOR_INFO1_LIVE | YouTube | 6 months | YouTube bandwidth estimation to determine video player quality |
| YSC | YouTube | Session | Tracks views of embedded YouTube videos during a session |
| yt-remote-device-id | YouTube | Persistent | Stores user video preferences for YouTube embeds |
| yt-remote-connected-devices | YouTube | Persistent | Stores user video preferences across connected devices |
| yt.innertube::requests | YouTube | Persistent | YouTube internal tracking for embedded video requests |
| yt.innertube::nextId | YouTube | Persistent | YouTube internal tracking for embedded video request sequencing |
Managing your preferences
You can update your cookie preferences at any time by clicking “Cookie settings” in the footer of this Site.
You can also control cookies through your browser. For guidance:
- Chrome: support.google.com/accounts/answer/32050
- Safari: support.apple.com/guide/safari/sfri11471/mac
- Firefox: support.mozilla.org/kb/clear-cookies-and-site-data-firefox
- Edge: support.microsoft.com/microsoft-edge/delete-cookies-in-microsoft-edge
Blocking or deleting cookies may affect the functionality of this and other websites.