Probably a long shot, but the British children's television programme Blue
Peter has buried a couple of time capsules in its 25 (?) year history. You
could try contacting one of the researchers on the BBC number, which is
(44) 181 743 8000. The address is BBC TV, Television Centre, Wood Lane,
London W12, UK.
Hope this is some help
Rebecca.
Programmes Unit
Science Museum
Exhibition Road
London, SW7 2DD
Tel +44 (0)171 938 8047
Fax +44 (0)171 938 9773