Actually, come to think of it I may have been to the Covent Garden one a few years ago. I'm sure that was the same restaurant I went to after seeing Les Mis.
I would have the Loch Fyne® Oysters followed by Farmed Gilt-Head Bream, pan-fried with Salsa Verde and Buttered New or Sautéed Potatoes, Pan-fried Samphire in Garlic Butter. And if I've got room, Crème Brulee with Home-made shortbread.
I can't actually open the menu to get a peek.... I'll have a bit of everything and then have to guess what's on the menu, that sounds like an alright deal to me.
It's been a while since I have been there but their Lobster was really good - and they have an excellent white wine list. Gather they have one in the City now.