I don't have much information on this video aside from it is Tommy Fossett as Professor Grimble. One of my guesses for the location is Blackpool Tower Circus since it is in a building, but I am open to the correct answer.
The female announcer is his wife, Vera, but I do not know who the whiteface is.
Please help out with any details. You don't know what you don't know. Thanks!
Update from John Cooper: "It's Great Yarmouth Hippodrome rather than Blackpool Tower Circus. This video is from the 1972 summer season, at which Tommy and Vera did their juggling act too."