A little gem this. From the series Comic Roots, which aired on BBC1 from 1982 to 1983. This one features Alexei Sayle, and seems to provide the template for his later shows, including Stuff, through to Merry-Go-Round.
Other episodes in the series featured Les Dawson, Roy Hudd, Irene Handl, Paul Shane, Michael Palin, Bill Dainty, and Kenneth Williams.