How many types of double decker bus in London?

Question

I notice that the buses are slightly diferent, eg the handrails are different.

Answer 1

London bus services are operated by private operators, which work under contract to London Buses.

a list of operators -

http://www.tfl.gov.uk/corporate/modesoft...

Answer 2

dont you mean a bus spotter? ;-)

Answer 3

Oh my I feel a train spotter here!!!!

Answer 4

note pads at the ready. time to start listing!

Answer 5

Jesus thats a good one no idea it would take a while to get that answer right..