The following have been absolutely "smashing" in helping to make this website what it is today:

Trevor Adair, Sheila Antrobus, John Archbold, Steve Arnold, David Ashurst, Russ Barker, Ian Beard, Ischa Bijl, Sheena Brierley, Des Brittain, Antony Brown, Bill Brown, Mark Chaloner, Brian Clark, Dave Cochrane, Gavin Collinson, Brad Cooper, Tim Cooper, Jim Cowan, Simon Coward, Rod Crockford, Larry Dart, Alan Day, Robert Dee, Tim Deeks, Cad Delworth, Julien Dessy, Sébastien Dias, Chris Dickinson, Martin Diplock, Malcolm Ellis, Stephen Ellison, Tim Emanuel, Richard Farnham, Michel Filannino, Hartmut Flatten, Kevin Fletcher, Hazel Ford, Pino Frisoli, Andy Geneux, Graham Gourlay, Andrew Gray, Sarah-Jane Gray, Ian Greaves, Michael Griffiths, David Hamilton, Neil Harvey, Alys Hayes, Dicky Howett, Ebby Kleinrensing, Konstantinos Kolovos, Cecil Korer, Nicolás E. Korzan, Thomas Kreidl, Richard and Sylvia Lancaster, Paul Leaver, François Lombard, Bernhard Luerssen, Gianni Magrin, Christian Masson, Ian McAdam, Adam McLean, Philippe Minet, Dave Moore, Christos Moustakas, Gareth Nickels, Mike Noon, Brian K. Outlaw, Jean P., Guido Pancaldi, Chris Perry, Mike Peters, David Piper-Balston, Laura Reed, Didier Robaldo, Gavin Roberts, Ian Rodger, David Laich Ruiz, Matthew K. Sharp, Tony Smith, Richard Stannard, Neil Storer, Elly Streng-Dunnewold, Simon Sturdy, Michael Swaffield, Ian Taylor, David Townson, Mauro Tozzi, Marko Vostan, David Walker, Julian Watson, Terry Wing, 'UKgladiatorsfan' on YouTube and the staff of the Westminster, Colindale and Manchester 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