Can anyone remember this old comedy sketch?

[Katy_M]

Two men in different prison cells are communicating by tapping on pipes with metal cups. The tapping then turns into the old BBC Test Match Special music

1970's or 80's possibly

[craigiep]

Is it not from the TV ads for British beef and lamb, which feature cartoon versions of Ian 'Beefy' Botham and Allan Lamb?

[Postdog]

I Think it may be Alas Smith and Jones.

[rugeleyboy]

smith and jones!!! i remember it well!!