These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Acceptable Targets: Besides Corbett himself for being short, the two later observed in a documentary that "You can't do 'stupid Irishman' jokes anymore, but you can if you just change them to being about 'yokels', because no-one's going to call in and say 'I'm a yokel and this offends me!' Hence the two yokel characters.
Hilarious in Hindsight: The show was famously (and controversially) parodied by Mel Smith and Gryff Rhys-Jones on Not the Nine O'Clock News, who pointed out its over-reliance on double-entendre and a format that had remained unchanged, and rather stale, since 1971. Years later, the Two Ronnies (still popular) came back to present the compilation 'The Two Ronnies Sketchbook'... only to have the format copied by Smith and Jones for 'The Smith and Jones Sketchbook'!
Once Acceptable Targets: The second episode of "The Phantom Raspberry Blower of Old London Town" contains a scene involving blackface, and one where Benjamin Disraeli is played as a Jewish stereotype. These were edited out of the 2005 repeat.