Help me find this episode
I've seen a lot of the old B&W episodes but not all of this one: it starts with Steed visiting a riding stable filled with beautiful girls in riding gear. One super pretty girl with a riding hat (helmet), jodhpurs and a white turtleneck has Steed (alone) help her put on her tall riding boots while they have a long conversation. This is all I remember, so it's probably 1963, 1964 or 1965, pre color definitely, don't know if it's Emma Peel or earlier Honor Blackman and don't know if the episode was about a riding club.
Does this ring a bell with any aficionados? Thanks!