The authors report on a comparative questionnaire study of semen donor
s at two London clinics offering donor insemination (DI). Results pres
ented here include donors' attitudes towards the storage of identifyin
g information on the UK Human Fertilisation and Embryology Authority's
central register, the importance of anonymity when donating, feelings
about bring traced by DI offspring, and views on the release of ident
ifying donor information to mature offspring. Donors from the two clin
ics were found to differ on some, although not all, of the above point
s; in particular, donors from one clinic offered more support for the
eventual release of identifying information to DI offspring. The discu
ssion brings in the results of other studies and highlights the comple
xity of the anonymity question. The authors conclude that some donors
may be willing to move towards greater openness of information under c
ontrolled conditions using the existing central register and a ''veto'
' system. Copyright (C) 1997 Elsevier Science Ltd