KnownDonor introduces people. It is not a clinic and never handles sperm. Safety · UK law

Terms of use

Last updated: 13 November 2026

1. What KnownDonor is, and what it isn't

KnownDonor is run by the business behind BloeiWens (see company details). We provide software that lets adults find each other for known sperm donation or co-parenting. That is all we do: we introduce people.

We are not a sperm bank, a fertility clinic, a healthcare provider or a law firm. We are not licensed by the Human Fertilisation and Embryology Authority (HFEA), and we don't need to be, because we never handle sperm. We don't collect, store, freeze, test, process, transport, post or deliver sperm, and we don't arrange for anyone else to. Under section 4 of the Human Fertilisation and Embryology Act 1990 those activities need an HFEA licence.

2. Who can join

You must be 18 or over and you must be looking for, or offering, known donation or co-parenting in good faith. We are starting in England. One account per person; your details must be true.

3. Rules everyone agrees to

  • No sex, no ‘natural insemination’.Asking for or offering sex or ‘natural insemination’ (NI), or sending sexual messages, is not allowed. Profiles that do this are suspended.
  • No buying or selling sperm.No payment, ‘expenses’ or gifts in exchange for a donation, and no advertising of paid donation.
  • No storing, posting or delivering sperm. Don't offer or ask for frozen sperm, sperm by post or courier, or ‘delivery’. The HFEA has said that storing sperm and arranging for it to be delivered are criminal offences without a licence.
  • Be honest. Donors must not hide or play down how many children or families they have already donated to, or their health and test history.
  • Respect. No harassment, pressure, discrimination or contact after someone has said no or blocked you.
  • Nothing illegal. Including anything that puts a child at risk, fraud, or impersonation.

4. Reports and moderation

You can block or report any profile. We read every report and decide what to do with care; we may warn, hide, suspend or remove a profile, or keep information needed to deal with abuse. We don't monitor every message and we can't promise a particular outcome or timescale. Reporting on the site is not an emergency service: if someone is in danger, call 999. If you think someone is storing, selling or posting sperm, the HFEA advises contacting the police.

5. Your decisions are your own

What you agree with another member, and anything you do offline, is between you. We don't check identities, tests or claims unless we say so. Donor agreements are not legally binding in the UK and cannot change who is a child's legal parent. Please read our guide to UK law and get independent legal and medical advice. We strongly recommend considering a licensed clinic, which you can also use with a known donor.

6. Price

Joining, profiles, likes and messaging are free. If we ever offer paid extras, we'll show the price clearly before you pay, and replying to messages will stay free.

7. Ending your account

You can pause or delete your account at any time in Settings. We may suspend or close accounts that break these terms.

8. Liability

We provide the service with reasonable care and skill. We are not responsible for what members say or do, or for the outcome of any arrangement between members. Nothing in these terms limits liability that cannot be limited by law, including for death or personal injury caused by negligence, or your statutory rights as a consumer.

9. Law and contact

If you live in the UK, you can bring a claim in the courts where you live, and the mandatory consumer protections of that part of the UK apply. Questions: hello@bloeiwens.nl.