Rob, may I recommend this excellent website:
http://members.fortunecity.com/furnacehot**************************************************
Also if you can get to Birmingham City Centre Library, they have a full bound set of TVTimes, containing some absolutely amazingly good articles on British wrestling. There's an amazing two-part interview with George Kidd from Feb '77 and a couple of months later, there's an incredible interview with a then 17-year-old Tom "Dynamite Kid" Billington plus his trainer Ted Betley.
Also check out circa November 1980 when there was a special centre pull-out section on wrestling to commemorate 25 years of it on TV.
I believe there's also another set of bound TVTimes at Manchester City Centre Library and they've got them on microfilm at the National Newspaper Library in Colindale.
Really tho, somebody should compile all the wrestling articles from TV Times together and put them out as a book.