Those of you who don't know London might enjoy this panorama taken from Richmond Park, using the 400mm lens, to pick out sites that are between approx 8 and 12 miles away.
Those who know the great buildings might be intrigued to see how they seem to be not exactly where you expect them to be. (e.g. St. Paul's on the left and the Houses of Parliament near the right.) This is because of the way the Thames curves around. I was quite surprised when I looked closely. My prejudices were all shaken up - which is a good thing!!!
The climate conditions are rather nasty. The heat and traffic pollution haze upset the focal clarity.