Booking a bus tour in London can be expensive for a budget London layover. Expect to pay £20 ($31 USD) for a single adult ticket that is good for 24 hours of hop on and hop off privileges. Since you don't have that long to spend here, it's tough to take full advantage of the benefits.
But many visitors to London love riding double-decker buses, and it's possible to do so at much less than £20. Here's how to do it: purchase a paper bus ticket in Tube stations for about £2.65 ($4 USD) and you'll have unlimited use of the red double-deckers for 24 hours. You can find maps for London bus routes online and print those that could be of use to you.
