This is the first entry in a list for sock sightings.

Wilde Alliance 03 "Too Much, Too Often" (1978)
https://youtu.be/yiPafrOnwX4?t=50

The Doctor Blake Mysteries S02E07 - The Silence / full episode
https://youtu.be/7ZiQL3VlKnI?t=652
https://youtu.be/7ZiQL3VlKnI?t=1533

Agatha Christie's Partners in Crime - 02 The Affair of the Pink Pearl / full episode
https://youtu.be/vz-F727GwY0?t=610
https://youtu.be/vz-F727GwY0?t=1009

Edd Byrnes
ITV Thriller Where The Action Is 8th Feb 1975
https://www.youtube.com/watch?v=RdNXSg5Xr0M

Gary Collins
The Double Kill S05E02 British TV Series
https://www.youtube.com/watch?v=BFQbzoedN6A

Shoe Removal
The Professionals (1977) SE1 EP1 - Private Madness, Public Danger
https://youtu.be/fLsIu8-nKkg?t=2852

Maigret Rupert Davies
The black and white series from 1960 to 1963.
I forget which episodes but there was at least 3. I'll let you know when I find them. I love the series and recommend it.

Agatha Christie's Death on the Nile, film version, 1978. You'll have to watch the movie as some haven't seen it.
Anyone seen the 2022 film version? I haven't.
The tv series also has a very similar scene with the same character.
https://www.youtube.com/watch?v=25VZHhwjgqc

Midsomer Murders from 1997, there are 22 or 23 seasons. Fun series. Bunch of sock sightings. Someday I might go back and watch them and find/list each one. Until then, you're on your own!

Please enjoy!