Johnny O wrote:Very glad I could help, albeit completely innocently! 1974 sounds a bit late, but my recollection is hazy at best! It was definitely daytime TV though.
I know the feeling. There's been all sorts of almost subliminal memories I've had of TV shows from the late 1960s/early 1970s that it's taken me almost 40 years to resolve.
For those interested in such things, the Thames screening details I have are as follows:
Rediffusion ran repeats of the b/w filmed episodes up to the end of their franchise, concluding with "Honey for the Prince" at 8pm on Friday 26 July. Then there's the chaos of the franchise reshuffle with a fully networked service (of which "The Avengers" doesn't seem to feature ... but "Danger Man" does).
Thames then start the new episodes with "The Forget-Me-Knot" in the 8pm slot from Wednesday 25 September 1968. There's a week off on Christmas Day, and the show runs through to "Thingumajig" on 2 April 1969. Then "My Wildest Dream" is given a late-night screening at 10.30pm on Monday 7 April 1969, following which "Requiem" returns to the 8pm slot on Wednesday 16 April and the run concludes with "Bizarre" on 21 May.
There seems to be a one-off re-run of "The Avengers" at 9pm on Tuesday 16 June 1970 as a replacement for repeats of "The Saint", but I don't know which episode.
"A Funny Thing Happened on the Way to the Station" runs at 10.30pm on Monday 31 August 1970, which again seems to be a one-off. Then a regular late-night run begins on Thursday 17 September 1970 at 11pm with "Mission ... Highly Improbable" and continues with an erratic sequence of colour Diana Rigg episodes ("From Venus with Love", "Return of the Cybernauts", "The Fear Merchants", "You Have Just Been Murdered" ...) with a few missing weeks (22 October, 24 December, 31 December, 4 February 1971, 25 February) to either 11 March ("Something Nasty in the Nursery") or 18 March 1971. So that's almost all the colour Diana Rigg shows re-run.
The Tara King re-runs begin with "The Forget-Me-Knot" at 11.15pm on Thursday 29 July 1971, continuing in an erratic sequence ("Split!", "Noon Doomsday", "Have Guns - Will Haggle", "They Keep Killing Steed") to 26 August.
Thames then resumes with a run on Thursdays at 11pm from 24 August 1972 with some episodes which I've not identified, but I believe are further Linda Thorson shows; "The Interrogators" seems to be the last of the sequence on 28 September, with a pre-empt on 21 September.
Then I have no Thames broadcasts of "The Avengers" at all for 1973, and from what you've indicated, it seems the Tara repeat run resumed for the spring 1974 screenings above. Unfortunately, my notes from later in 1974 are rather fragmented, so the remainder of the run may well have appeared later that year, or indeed in 1975/6.
All the best
Andrew