The party bus will also be visiting the Jampot, as locals affectionately refer to it, a pub which crops up again and again in the history of the City. In the early days it was a coffee house, London's first, before transmuting into a busy business exchange used by sea captains, rum and brandy merchants -anyone trading with the West Indies. It is, like many a City pub, tucked away up a medieval alley too narrow for traffic. Delivering the beer to it has always been a problem.