There used to be a good Sunday night session at the Red Cow in Richmond that ran for about 25 years (I went regularly for 14 of those before moving to Belgium 11 years ago) but I believe it has just packed up which is a crying shame as it was one of the best.Round the corner in the Duke's Head, The Vineyard, Richmond there is often a session on a Wednesday night. Probably best to check with the pub before going to be sure the musos are coming in that night.
mooman