We went 10 years ago and had a good hotel in westminster Up the street near the tube station was large mosque. People always milling outside and taking over the sidewalk etc. We always walked on the other side of the street. My wife is a modest dresser and it was fall. We still got a lot of stares as if we were intruders.
I was struck by how very subservient ethnic Brits are to the invaders. I watched Brits step into the street rather than disturb the invaders walking on the sidewalk. It was very sad to see a proud people so humbled in their own country. And yes I felt like an intruder too.