Last updated: 15 April 2026

Privacy Policy

This Privacy Policy explains how Sentinel Metrics Limited trading as PreOfferChecks (“we”, “us”, “our”) collects, uses, stores and shares personal data when you use https://preofferchecks.co.uk, create an account, buy a report, run a property check, contact us, or otherwise interact with our services.

This policy is written for users in the United Kingdom and is intended to support transparency under the UK GDPR and the Data Protection Act 2018.

1. Who we are

Data controller: Sentinel Metrics Limited
Trading name: PreOfferChecks
Website: https://preofferchecks.co.uk
Email: support@preofferchecks.co.uk
Registered office: 5 Brayford Square, London, United Kingdom, E1 0SG
Company number: 16968275

If you have questions about this Privacy Policy or want to exercise your data protection rights, contact us using the details above.

2. What this service does

PreOfferChecks is a pre-offer property intelligence and decision-support service for UK property buyers. Users can submit a property address or listing link and selected inputs so that we can generate a report containing pricing context, risk signals, decision guidance, and related analysis.

Our reports are designed to support decision-making only. They are not legal advice, valuation advice, mortgage advice, insurance advice, or a replacement for a surveyor or solicitor.

Reports are generated using artificial intelligence, automated scoring, and data from public and third-party sources. AI-generated outputs may contain errors or inaccuracies and should not be relied upon as a substitute for professional advice.

3. The personal data we collect

Depending on how you use the service, we may collect and process the following categories of personal data.

A. Information you provide directly

  • Your name
  • Email address
  • Email address and authentication details used to create and access your account. Passwords are never stored by us in plain text. Authentication is handled securely by our third-party auth provider. We do not have access to your password.
  • Messages or support requests you send us
  • Property-related inputs you submit, including listing URLs, property addresses or postcodes, asking price, estate agent name or website, selected property condition, selected buyer lens or package choice, and any other details you choose to provide as part of a report request

B. Account and service history

  • Saved reports and report outputs
  • Associated source snapshots
  • Purchase history and invoices
  • Payment-linked account history
  • User preferences and settings

C. Payment and billing data

We use Stripe to process payments. We do not store your full card details on our own systems. We may receive limited payment-related information from Stripe, such as payment status, payment method type, billing name, billing email, transaction identifiers, country or postcode associated with a payment, and invoice and receipt information.

D. Technical and usage data

When you use the website, we may automatically collect technical data such as IP address, browser type and version, device type, operating system, referring pages, pages viewed, timestamps, approximate location derived from IP, security and fraud-prevention signals, and cookie or session identifiers.

We use PostHog for product analytics. PostHog collects data about how visitors use the website, including pages viewed, feature interactions, and session activity. PostHog is opted out by default and only begins capturing data after you accept analytics cookies via the cookie banner. Data is processed by PostHog on EU-region infrastructure.

We also use Google Analytics to understand how visitors use the website. Google Analytics may collect and process data about your visit, including pages viewed, time on site, and approximate location. Google Analytics is only loaded after you accept analytics cookies. You can also opt out of Google Analytics tracking permanently using the Google Analytics Opt-out Browser Add-on.

E. Data from public and third-party sources used to generate reports

To generate reports, we may obtain and combine relevant data from public and third-party sources, such as property, environmental, planning, crime, healthcare, education, map, transport, review, and local discussion sources. This may include data associated with a property, postcode, area, planning application, or public discussion theme.

4. How we collect personal data

We collect personal data:

  • directly from you when you create an account, submit a property check, make a purchase, or contact us;
  • automatically when you use the website through cookies, logs, and similar technologies;
  • from payment providers and service providers involved in delivering the service; and
  • from public records, open datasets, and other third-party data sources that support report generation.

5. How we use your personal data

A. To provide the service

Create and manage your account; accept your report request; generate and deliver your property report; save reports to your account; provide invoices, receipts, and purchase history; enable account features such as saved reports and payment-linked history.

Lawful basis: performance of a contract, or taking steps at your request before entering into a contract.

B. To take payment and manage billing

Process payments; prevent failed, fraudulent, or unauthorised transactions; issue invoices and maintain financial records.

Lawful basis: performance of a contract; compliance with a legal obligation; and our legitimate interests in protecting the business from fraud and revenue loss.

C. To operate, secure, and improve the service

Troubleshoot problems; monitor performance and stability; detect abuse, fraud, scraping, misuse, or other security risks; audit service usage; improve our models, workflows, prompts, scoring, and report quality; maintain internal records and backups.

Lawful basis: our legitimate interests in running, securing, and improving the service.

D. To communicate with you

Respond to support requests; send service messages, confirmations, receipts, and important notices; notify you about changes to the service or this policy.

Lawful basis: performance of a contract; legal obligation where relevant; and our legitimate interests in administering the service and supporting users.

E. Marketing

If you sign up to receive marketing emails, we may send you updates about PreOfferChecks, product improvements, and related services. You can opt out at any time using the unsubscribe link in any marketing email or by contacting us at support@preofferchecks.co.uk.

Lawful basis: consent where required by law, or our legitimate interests where permitted.

F. To comply with law and defend legal claims

Comply with tax, accounting, regulatory, law-enforcement, or court requirements; establish, exercise, or defend legal claims.

Lawful basis: compliance with a legal obligation and our legitimate interests in protecting our business.

6. Automated processing

PreOfferChecks uses automated systems, rules, prompts, scoring methods, and data aggregation to generate report outputs such as offer ranges, risk flags, confidence scores, and decision guidance. These outputs are decision-support tools only and are not used by us to make decisions about you that produce legal or similarly significant effects within the meaning of applicable data protection law.

7. Who we share personal data with

We may share personal data with the following categories of recipients where reasonably necessary:

  • payment processors, including Stripe;
  • cloud hosting, storage, database, authentication, and infrastructure providers;
  • analytics providers, including PostHog and Google Analytics;
  • email delivery and communications providers, including Resend;
  • professional advisers, including lawyers, accountants, insurers, and auditors;
  • regulators, courts, law-enforcement agencies, or public authorities where required; and
  • a buyer, investor, or successor if we sell or reorganise all or part of the business.

We do not sell your personal data.

8. International transfers

Some of our service providers may process personal data outside the UK. Where this happens, we take steps designed to ensure that personal data remains protected using lawful transfer mechanisms and appropriate safeguards under applicable law. You can contact us if you would like more information about the safeguards we rely on.

9. How long we keep personal data

  • Account information: for as long as your account remains active and for a reasonable period afterwards.
  • Saved reports and report history: for as long as needed to provide your account history and report access, unless you request deletion.
  • Guest reports: not stored long-term. Limited operational or troubleshooting data may be retained for a short period.
  • Payment, invoice, and accounting records: typically at least 6 years where required for tax and legal record-keeping.
  • Support communications: typically up to 24 months after resolution.
  • Security and technical logs: typically up to 12 months.

We may anonymise data so that it no longer identifies you. Anonymous data may be used for analytics, service improvement, and research.

10. Cookies and similar technologies

We use two categories of cookies:

Strictly necessary cookies are set automatically and are required for the website to function. They enable login sessions, account access, and checkout flows. These cookies cannot be turned off without preventing core site functionality. No consent is required or requested for these cookies.

Analytics cookies are set only if you explicitly accept analytics through the cookie banner shown on your first visit. We use PostHog and Google Analytics to understand how visitors use the website. If you do not accept, no analytics cookies or tracking scripts are activated. You can change your preference at any time using the “Cookie settings” link in the footer, or opt out of Google Analytics entirely using the Google Analytics Opt-out Browser Add-on.

You can also manage cookies through your browser settings at any time.

11. Security

We use reasonable technical and organisational measures designed to protect personal data against unauthorised access, alteration, disclosure, loss, or destruction. However, no internet-based service can be guaranteed to be completely secure. You are responsible for keeping your account credentials confidential and for notifying us promptly if you believe your account has been compromised.

12. Your rights

Depending on the circumstances, you may have the right to:

  • request access to the personal data we hold about you;
  • request correction of inaccurate or incomplete data;
  • request deletion of your data;
  • request restriction of processing;
  • object to processing carried out on the basis of legitimate interests;
  • request transfer of certain data to you or another provider;
  • withdraw consent at any time where processing is based on consent; and
  • complain to the Information Commissioner's Office (ICO) if you believe your data has been handled unlawfully.

To exercise your rights, contact us at support@preofferchecks.co.uk. We may need to verify your identity before responding to certain requests.

13. Third-party links and sources

The website or reports may refer to or incorporate information derived from third-party websites, public records, maps, listings, reviews, or discussion sources. Those third parties are responsible for their own privacy practices. Our website may also contain links to third-party websites. We are not responsible for the privacy practices or content of those external sites.

14. Children

PreOfferChecks is intended for adults and is not directed at children. We do not knowingly collect personal data from children.

15. Changes to this Privacy Policy

We may update this Privacy Policy from time to time. When we do, we will post the updated version on this page and update the “Last updated” date above.

16. Contact and complaints

Sentinel Metrics Limited
Trading as PreOfferChecks
Email: support@preofferchecks.co.uk
Registered office: 5 Brayford Square, London, United Kingdom, E1 0SG
Company number: 16968275

You also have the right to complain to the Information Commissioner's Office (ICO), the UK supervisory authority for data protection matters.