MIG wrote:

I once got out at Kentish Town in the ****ing rain* and couldn't see
any road names, so I used a compass to find the starting direction to
get to the London Hazards Centre (as was). However, this is possibly
the only time in my whole life that I used a compass in London.

You never need a compass unless you are in the countryside or a conservation
area, because satellite dishes in Britain always point south.