Trevor Adair, John Archbold, Ian Beard, Ischa Bijl, Antony Brown, Mark Chaloner, Dave Cochrane, Gavin Collinson, Jim Cowan, Robert Dee, Sébastien Dias, Tim Emanuel, Richard Farnham, Kevin Fletcher, Pino Frisoli, Graham Gourlay, Sarah-Jane Gray, Ian Greaves, Michael Griffiths, Neil Harvey, Alys Hayes, Dicky Howett, Ebby Kleinrensing, Konstantinos Kolovos, Nicolás E. Korzan, Paul Leaver, Bernhard Luerssen, Gianni Magrin, Christian Masson, Adam McLean, Philippe Minet, Dave Moore, Christos Moustakas, Mike Noon, Brian K. Outlaw, Jean Patrimonio, Mike Peters, David Piper-Balston, Didier Robaldo, Ian Rodger, Matthew K. Sharp, Tony Smith, Neil Storer, Simon Sturdy, Michael Swaffield, Ian Taylor, Mauro Tozzi and the staff of the Westminster and Colindale reference libraries.

Thank you all!

Research Sources:
Radio Times magazine, 1950s-present
TVTimes magazine, 1997-present
It's A Knockout Annual 1977, World Distibutors, 1976
The Times/The Sunday Times, 1950s-present
The Penguin Television Companion by Jeff Evans, 2001
2ZY to NBH by Ian Hartley, Willow Publishing, 1987
Radio Times Guide to TV Comedy by Mark Lewisohn, BBC Worldwide, 1998
40 Years of British Television by Jane Harbord and Jeff Wright, Boxtree, 1992
Halliwell's Who's Who in the Movies ed. John Walker, 2001 
Kaleidoscope guides
BBC INFAX system
JSFnet websites