Would it be a trip to London without a double-decker bus tour?!
"A hop on hop off bus tour is one of the most iconic things to do in London. Come rain or shine it’s a great way to explore the city, get your bearings and see the sights, from Big Ben, to Trafalgar Square; the Tower of London and Westminster Abbey. Hop on and off at over 60 stops and over 3 routes around London and see how much you can tick off your bucket list."