Based on my commuting yesterday:
Four Southwestern train services (London commmuter services)- masks are optional but about 95% of passengers had them.
Two TFL services within London - masks are a condition of travel but compliance varied between about 40% and 70% depending on time & location.
As I've noticed before, the passengers
most likely to wear masks are the commuters, or "suits".
I assume the others are simply less considerate, or simply simple.
The evening train home was standing room only, rammed in; shoulders brushing shoulders. Had to face away from the guy next to me who had no mask; moved away from him as soon as I could. Later he was closing windows; so much for ventilation.
Typical Clapham Junction crush circa 5:30pm: