Okay despite the comments about stereotyping above there is a French restaurant (which is in a very touristy area) I have recently been to Clos Maggiore (Covent Garden) and had a very good lunch for my friends birthday. If you can get a table in what I would call the flower room then it's very romantic, the paneled dining room upstairs is not bad, but I was told to beware of elsewhere. We were in the paneled dining room which was fine.
http://www.closmaggiore.com
http://www.tripadvisor.co.uk/Restaur...n_England.html