Fantastic pics! I still remember sitting in that park one summer observing a Chinese gentleman practicing his Tai Chi, complete with a collapsible 'kung fu' sword. In case any one doesn't know, that cute 'house' in the background is actually a ventilation shaft for the Northern Line that runs below.
Also, one of the nicest coffee joints in London is round the corner, Bar Italia, where you can observe couples with the same clothes and gender walk by hand in hand.