'I would encourage everybody to cycle to their local cathedral and just go and listen': meet the man on a mission to save choral music by bike

Man stands with bike in front of cathedral doorway.

The late afternoon light is falling in greens and oranges and reds on the cathedral's terracotta floor. People clutter the pews as the music starts up, complex, layered sound echoing around the cathedral's great interior.

And then in comes Jonathan Mayes.