Hi Maisymoo,
Just wondered if there is a reason not to stay in the UK? Just saying that because of the difference in the law in terms of your child being able to ID the donor at 18? You can search clinics on the HFEA website and that will give you an idea of waiting times, cost etc. Clinics with donors include places like LWC, the Care Group, Lister, Manchester Fertility, Herts and Essex, Altrui etc.
There are other countries with ID release donors including Portugal and Denmark etc so that could be an option if not the UK.
My children were conceived in Spain 13 years ago, and one of the issues for them is the lack of information on their donors as they only have age and blood group. You may want to shop around with clinics and find out how much donor information they give? Other clinics like Serum in Athens may give more information.
Obviously, the growth in commercial DNA testing may mean an end to anonymity, but Europe has not yet caught up with the UK/US in terms of submitting DNA to find relatives. However, in the case of my children, they just want to know more details about the donor like height, eye colour, hair colour, interests etc which we don't have.
Have a look at the Donor Conception Network site for help and support.
www.dcnetwork.org/home-or-overseas
I would also recommend counselling to help with the implications of losing a genetic connection and thinking about a future child.