The Human Fertilisation and Embryology Authority (HFEA) regulates UK donor conception treatment.
Donation services are provided by many UK fertility clinics, which match recipients and donors and provide fertility treatment services.
If you are using a UK Fertility clinic, you should ensure that the clinic has an HFEA licence.
Clinics will either recruit their own egg or sperm donors in the UK or buy in donated eggs or sperm from other clinics and sperm banks (which might be in the UK or abroad).