Well, if you are bored during lockdown and fell you have nothing to do, you might want to follow in the pedal strokes of a man from Latvia who spend five years cycling every street in central London!
During a recent telephone call from a friend overseas, he told me about a gentleman from Latvia. He moved to London a while ago and completed most of the journeys, that was eventually allow home to say he had cycled all the streets in central London, on his way to work. Quite an achievement.
The Brompton would definitely be the way to go if you wanted to do this sort go things however I can't help but think there are lots and lots of streets in central London I would never want to see let alone cycle down. Each to their own.
Keep safe people...keep safe!!