Old Christchurch Road.
I used to like this place a lot. They had good food, excellent cocktails and a good atmosphere. Since they got taken over the food hasn't been as good and the drinks have been pretty amateurish even in getting served.
It has a late bar though and an interesting mix in music, which seems to jump from decade to decade, not unseemlessly.
It's still worth going in a group as it has a good atmosphere.