Seriously avoid this place.
I went there with my boyfriends. I ordered a rose champagne and it was flat, old bottle obviously, we asked for a new glass, my boyfriends watch them pour some of the glass out and refill the top with another bottle, seriously are we stupid, the champagne was still flat, but waitress pointed at the bubbles and said it was not flat. Called her back and asked for a new glass. Head waiter come over, made us fell stupid and said if this glass is flat then the bottle is flat. Very rude. Our bread was late, after entrée, with no butter. I can go on but seriously there is some attitude problem here. Guys, you need to work on your service, we are not stupid, if champagne is flat, it will not get better with a little top up from a fresh bottle, train your staff. The welcome was also sad. There are better places in Selfridges.