Very busy, hot and organisation fell apart towards the end
Review by confirmed purchaser
It was a very hot day in London and there were big crowds. No air conditioning on the bus down below. Crowd control (preventing people from getting on as you're getting off with elderly parents and small children) not very good; inexplicable delays trying to get back to the start point at the end of the trip; diversions that were in place due to works at Buckingham Palace not properly explained. The drivers and staff on board the bus were very, very good.