Dave Hillam wrote:
IME more visitors to London appear to have a mortal fear of getting on
a London bus. The main reasons I've been able to establish are a)
perceived as being far too slow and b) a fear of getting irretrievably
lost.

I'm a Londoner and have no problem using buses here - but if I'm in a
strange city I'll take the metro or a tram by preference. Something
psychlogical to do with the fact that metro or tram services can't
deviate from their tracks and (usually!) come back exactly the same way
they went, point (b) in Dave's post.