You have done an excellent job at showing me London. I liked the image quality. The photos weren't washed out as I often see with other galleries. I did notice that you tend to put the focal point in your pictures more or less dead center. Try to avoid that. It is a "mistake" we are all guilty of but when you are out again try moving your subject off center.
Also make sure your subject is well within the shot. In a few cases you have clipped or cropped to tightly the shot. IMHO.
Good Work. Look forward to seeing more.