Is he talking to someone down a man hole and Ely and then compo come along
I will call that close,he is talking to a chap down a manhole,and the chap slides the cover so he cannot hear foggy any more,but No Eli or Compo, the episode is Stop That Castle
Beg your pardon, but I think Summerwine is correct about Eli and Compo, unless there are two manhole incidents. Foggy calls down, "Are ya there?" Eli appears and says "I'm here. I'm here" as he looks around for the voice. Compo comes from behind and greets Eli who says "How did you do that?" saying he is a lovely young lady with a good ventriloquist voice.