Aaaah, Mrs Peel...Gayle Hunnicutt and Jeremy as Irene and Holmes! You couldn't better the casting, could you? And at the end of the episode, when offered a reward for his work, all Holmes wanted was her piccy. Awwwww!
My favourite bit is when he's in trampy disguise, talking to her at the carriage (like Beauty and the Beast!) and she slips him a coin.
In the 80s I went into a tobacconist's in Manchester, near Granada Studios, and they maddeningly told me that I'd just missed Jeremy, who'd had just been in to buy a churchwarden-style pipe, presumably for his role as Holmes!