Episodes 6.01 and 6.02:
In which most of the team decamp from Indiana to London, and among other escapades go sightseeing, with a background of London buses.
An ADL E400H of Metroline is followed by a First London AEC Routemaster:
An Arriva Original London Sightseeing Tour DAF DB250/Plaxton President, and two other 'deckers from the same fleet:
The second is followed by an Abellio ADL E400H on route 3:
Plaxton Presidents of London Central and Metroline:
....and another, with City Sightseeing:
....while looking the other way, there's a London Central WVL class Volvo B9TL/Wright, which is passed first by a Duck Tours DUKW (!), then by a Scania Omnicity: