TV Theft, Radio Rip-off was the title of a documentary, broadcast as part of the Arena Radio Night theme evening several years ago, about the notion that television steals radio's greatest ideas.  For some reason, radio-to-TV transfers seem to occur almost exclusively in the field of comedy and light entertainment as opposed to, say, drama or current affairs.  In the past few years, as many as half of all successful TV comedies seem to have had a prior existence on the radio.  Of course, there is no real theft: the material in shows which transfer does not belong to 'the radio' but to its writers, who are generally not too dismayed at the prospect of bringing their work to a much larger audience for very much more money.

What follows is intended as a complete list of comedy shows which have made the jump since 1980, with their dates and the channels on which they were broadcast (nb: these do not necessarily relate to the production companies which made the shows).  Details for several programmes are missing: let me know if you can fill any of these in, and also if you spot any omissions from the list.

The following shows have run to at least one full series on British television:

Notes:
[1] Both versions were derived from a novel
[2] The TV series also used material from its creators' work on other radio series
[3] Not really a transfer: the TV series was largely an original idea.  However, it incorporated material and plot devices first heard in sketches on the radio show
[4] Possibly not a transfer at all: as far as I know, there is no kind of contractual or ownership connection between the two shows. They do, however, have an almost identical (if very simple) format. This is probably a complete coincidence; alternatively, of course, it could be the one true 'theft' on the list.

The following shows transferred to television as one-offs or transmitted pilots only:

It should also be noted that some shows have passed in the opposite direction, whether as straightforward soundtracks from the TV shows (A Bit Of Fry and Laurie, Victoria Wood As Heard On TV) or with the aid of partial or complete re-recording (Shelley, Yes, Minister and, in the 1970s, Dad's Army, which spawned a little-known radio-only spin-off called It Sticks Out Half A Mile).  To The Manor Born was originally planned as a radio sitcom but was remodelled for television before it had even been recorded — only to be brought back eighteen years later as a Radio 2 show.