This event formed the official opening of a special Pegasus display area in the computer Gallery of the Science Museum, where Pegasus Number 25 was demonstrated by members of the Computer Conservation Society. Documents include: (a) Reception acceptances; (b) pre-event list of possible invitees; (c) programme of six talks at the seminar; (d) some OHP slides from the presentations; (e) correspondence with Sir John Fairclough, who chaired the seminar on 17/5/2001.