Whisky drinking bottle swap sketch

[Ernie Here]

What was it called? It might of been a play but on the last night the whisky bottle full of water was swapped for the real thing, causing the actor to get drunker every time he had to say his line and take a swig. It had the bottle on a table can't remember who the two main actors where. It has been shown on tv in the granada region, not sure which channel.

[Hammer Head]

To correct you.

"it might have been a play"

"can't remember who the two actors were"

[juddlinski]

Withnail & I perhaps?

[Ernie Here]

Thanks but iI don't think it was Withnail & I any more ideas