Ask the Ask the DPO
Last updated: 13 October 2026
Who we are
Sentinel42 Ltd (company number 17286468), 66 Paul Street, London EC2A 4NA, is the controller of the personal data you submit through this site. You can contact us, including our Data Protection Officer, at hello@sentinel42.com.
What we collect
- Your name, work email address and, if you give them, your organisation and role
- Your organisation's size, sector and the jurisdictions involved
- Your question and any context you include
- Whether you have opted in to updates
We ask you not to include personal data about other people in your question. If you do, we will only use it to answer you and will delete it in line with the retention periods below.
Why we use it and our lawful basis
| Purpose | Lawful basis (UK GDPR Art 6(1)) |
|---|---|
| Answering your question and any follow-up about it | Legitimate interests (Art 6(1)(f)): responding to an enquiry you have chosen to send us |
| Following up about related Sentinel42 services, by business email | Legitimate interests (Art 6(1)(f)). You can object at any time and we will stop |
| Sending data protection updates, only if you tick the box | Consent (Art 6(1)(a)) and PECR reg 22 where it applies. You can withdraw consent at any time |
| Publishing anonymised versions of useful questions and answers | Legitimate interests (Art 6(1)(f)). We remove anything that identifies you or your organisation |
Who we share it with
We use trusted service providers who act as our processors under written contracts:
- Web3Forms, which delivers form submissions to our inbox
- Cloudflare, which hosts this site and protects it against attack
- Microsoft 365, our email and business systems
- Anthropic, which provides the AI research assistant used to prepare draft answers under commercial terms that do not allow your data to be used for training models
Some of these providers may process data outside the UK. Where they do, we rely on UK adequacy regulations or the International Data Transfer Agreement or Addendum as appropriate. We do not sell your data.
How long we keep it
We keep enquiries and our answers for up to 24 months after our last contact with you, unless you become a client, in which case our client retention schedule applies. Marketing preferences are kept until you withdraw consent, plus a suppression record so we do not contact you again.
Your rights
You have rights to access, rectify and erase your data, to restrict or object to our processing (including an absolute right to object to direct marketing), to data portability, and to withdraw consent at any time. Email hello@sentinel42.com to exercise them. If you are unhappy with how we handle your data, you can complain to the Information Commissioner's Office at ico.org.uk.
Cookies
This site sets no cookies and uses no analytics or tracking. Cloudflare may set strictly necessary security cookies to protect the site.
Not legal advice
Answers are general guidance based on the information you provide. They are not legal advice and do not create a client relationship. For litigation, regulatory enforcement or contested matters, please take advice from a solicitor.