Where in London was I? Help locating a restaurant...?

Hi all,

I was out and about with colleagues a few years ago and was pretty drunk. We decided to go for a meal and ended up at this very nice/fairly expensive Indian restaurant. I'd like to take the Mrs there one day but can't remember where it is. Can you help me find it?

Here's what I remember:

-It's in central London

-There's a courtyard.

-To the left, a set of outdoor wooden steps that take you up a floor (onto a platform that wraps around the courtyard)

-The Indian restaurant entrance is on the left as soon as you walk up the steps.

-Fairly large place with big round tables when you first enter.

-The courtyard has a place to drink within it as it was a warm night and there were loads of people outdoors drink. Standing on the steps also.

Thanks!