Yes, I'm sure plenty of us of a certain age will remember it well. I was less bothered by the smoke, being an ex-smoker myself, but found its (metaphorical) atmosphere almost inspiring. Everything was so old and dilapidated, including the sets and big, old wooden clocks, that you could imagine that Steinitz and Zukertort had only just popped out of the room.
Browsing online, I have just found a photo of it in 1963 - 7 January 1963, to be precise, with Kotov giving a simul to juniors...

- 1963-01-07-kotov-simul-st-brides-london.jpg (607.17 KiB) Viewed 1796 times
From the SCCU Bulletin, January 1963:
SCCU Bulletin, January 1963 wrote:SIMULTANEOUS EXHIBITION BY A. KOTOV; Following his success at Hastings the Russian Grandmaster A. Kotov
on Monday January 7th gave a simultaneous exhibition at St. Bride's Institute against 24 London Junior Competitors from the London Junior Championship Tournament. He whipped round at an amazing speed and in under 3 hours had won 13, drawn 10 and lost 1. The boys who drew were C. Waites, D.N. Levy, J.R. Mitchell, D.C. Rowe, R.D. Keene, N.J. Patterson, A.N. Brilliant, P.H. Collins, H. Waldman & R.E. Sage, The sole winner after a hard end-game struggle was W.R. Hartston. It was a delightful afternoon's entertainment and not likely to be forgotten in a hurry by those of us who were privileged to be present.
As regards identification of the people in the photo: Bob Wade is the easiest to pick out, standing at the back. But I don't recognise the chap with the clipboard standing next to him. I can't identify any of the four players immediately in front of Wade and the other adult.
I think the player in play opposite Kotov is Kenny Harman. If I have identified him correctly, the player on his right, nearest the door and writing on his scoresheet is, I think, Michael V Lambshire. Two to the right of Harman - Hartston? That's all I've got, I'm afraid.