The canal episodes always remind me of The Goon Show....

Valentine Dyall:
Ladies and Gentlepong. A funny thing happened to me on my way to the theatre tonight - a steam roller ran over my head. So much for humour. And now pray allow me to tell the story of...

Milligan:
[Screams]

FX:
[Deep resonant splash]

Greenslade:
'The Canal', ha ha ha [goes off laughing into echo]

Orchestra:
[Sinister horror theme]…….

Lord Valentine Dyall:
Hello? Lloyds? I want to add that last policy on my son Neddie. Yes, yes, I want one that covers him in the event of his ever putting concrete blocks on his feet and throwing himself in the canal. Yes, I know it's not likely to happen but, ha, ha, but just in case.