A mostly authentic experience is to be had in this boisterous French restaurant. Of particular note is their minute steak. As my waiter put it, "Monsieur, if this restaurant had a flag, there would be a steak on it." Seriously good stuff. The wine selection ranges should please every budget, down to a selection of palatable house wines, and there is always a selection of delectable desserts on hand.
Services is more London than Paris, so don't be in a hurry for anything, but sit back and do some people watching while you let your dinner digest and wait for the bill.