Sorry Annap, Just showing my age there. They were for the most part stand up comedians from steam radio in England from the late Forties on.

Those in the list that you should know are...
Arthur English who was one of the janitors on 'Are you being served' He was the one with the cheeky grin, not the miserable one.
Jon Pertwee was best known as the Third Dr Who. Jon Pertwee
He was also one of "The Carry on" crowd.
Michael Bentine was one of the Goons. Invented "The Bumblies" and he too was one of "The Carry on" crowd.
Kenneth Williams is probable best known from "The Carry on" movies but did a lot of good stuff on his own. One of his "party pieces" was talking gibberish in many different languages. He would start talking and it sounded English but you couldn't understand a word of it; then while he was still talking, the gibberish would be French, the German, then Welsh, then Indian and so on.
Sir Harry Secombe was also one of the Goons but kind of phased out his comedy act in favor of singing. He has a great voice.

Bert.