Every so often a person arrives who does more to change the landscape of London than most MPs, and Ryan Chetiyawardana is one of them. Otherwise known as Mr Lyan, he’s what you might call a disruptor.

Players call out to each other in Burmese as they race up and down a small field in the heart of Shinjuku. Pyae Lyan Aung, a former goalkeeper for Myanmar’s national soccer team, blocks a shot and ...