I just recently went on a first date with a guy I met online…we had dinner and then went for a walk around the downtown area of the city we were in. It was really nice, there weren't too many people around so it was sort of private, we walked along the river too and so we could stop every so often to look at the water. That way too you will never run out of things to talk about because you are always seeing something new. I have never been to London, but maybe something simple like a walk.