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Data Protection Notice

This Data Protection Notice explains how Marsus Digital Limited acts as a controller for personal data collected through marsus.com and related business communications. It is intended for website visitors, prospective clients, clients, suppliers and other business contacts in the United Kingdom.

1. Controller Details

  • Company: Marsus Digital Limited
  • Registered address: 1 Trafalgar Square, Northumberland Avenue, London WC2N 5BW, United Kingdom
  • Company number: 11912033
  • Contact: [email protected]

2. Categories of Personal Data

  • Identity and business details: your name, job title, company name and company size.
  • Contact details: your email address, telephone number and other details you provide so that we can respond to you.
  • Enquiry, project and subscription data: the information you submit through contact, quote and newsletter forms, together with related opt-in / opt-out records.
  • Usage, analytics and conversion data: page views, clicks, referring URL information, browser / device / language data, conversion events and similar product analytics records processed through PostHog Cloud EU. PostHog is configured in cookieless mode, and relevant events may include information entered into forms or newsletter sign-up flows.
  • Technical, security and diagnostic data: IP address, request metadata, error records, performance data, console logs, browser / device context and sampled session replay information processed through Sentry.
  • Consent and preference data: categories accepted or rejected through our consent management tool, timing and history of those choices and limited browser-side preferences.
  • Correspondence records: emails and other communications with you.

3. Purposes and Legal Bases

  • Responding to enquiries and preparing quotes - contract or pre-contract steps requested by you.
  • Managing client, supplier and business communications - legitimate interests and, where relevant, contract performance.
  • Running newsletter subscriptions and recording preference choices - consent and legitimate interests in administering communications.
  • Displaying, storing and applying consent preferences - legal compliance and legitimate interests in operating the site responsibly.
  • Measuring, improving and securing the website - legitimate interests and, where required, consent for optional analytics or non-essential replay-style features.
  • Record-keeping, legal compliance and protecting our legal position - legal obligation and legitimate interests.

4. Recipients

We may share personal data with providers who support our operations, including CMS and hosting providers, cloud and email services, Google reCAPTCHA, PostHog Cloud EU, Sentry, our consent management service delivered through cookie.marsus.digital, embedded media providers where relevant, professional advisers and public authorities where disclosure is required by law.

5. International Transfers

Where personal data is processed outside the United Kingdom, we rely on an appropriate transfer mechanism such as UK adequacy regulations, the International Data Transfer Agreement, the UK Addendum to Standard Contractual Clauses or another lawful safeguard.

6. Collection Methods

We collect personal data directly from you through forms, email, telephone and other business communications, and automatically through browser technologies, analytics tools, diagnostic scripts, server logs, consent management interfaces, anti-spam services and embedded media tools.

7. Retention

  • Enquiry and quote data is normally retained for up to 24 months after our last meaningful contact.
  • Newsletter data is retained until you unsubscribe or withdraw consent, plus limited suppression records where required.
  • Consent and preference records are retained for as long as reasonably necessary to apply your choices, demonstrate compliance and manage objections or disputes.
  • Analytics and diagnostic data is retained only for as long as reasonably needed to improve the service, investigate incidents and secure the site, then deleted, anonymised or aggregated.
  • Where data forms part of a contract, transaction or legally required business record, it may be retained for longer in line with applicable law.

8. Your Rights

Subject to the conditions and exemptions in UK data protection law, you have the right to request access to your data, ask for inaccurate data to be corrected, request erasure, request restriction of processing, object to processing based on legitimate interests, request portability where applicable, withdraw consent at any time where we rely on it, and complain to the Information Commissioner's Office.

9. How to Exercise Your Rights

Please email [email protected] if you would like to make a data protection request. We may ask for information to verify your identity before responding. You can also complain to the Information Commissioner's Office at ico.org.uk.

10. Last Updated

Last updated: 22 April 2026.