Couples considering donating their embryos, or women interested in becoming egg donors should contact the National Egg and Embryo Donation Society (Needs), Regional IVF Unit, St Mary's Hospital, Whitworth Park, Manchester M13 0JH (0161-377 5077).

Leaflets on egg and sperm donation and a list of centres offering egg donation can be obtained from the HFEA, Paxton House, 30 Artillery Lane, London E1 7LS (0171-377 5077).