Private Tour: 'Downton Abbey' TV Locations Tour of London by Black Cab. Immerse yourself in the London of 'Downton Abbey' on this 3-hour, 4-hour or full-day black cab tour with a friendly driver-guide. The private tour visits the locations where the series was filmed, as well as the exclusive gentlemen’s clubs and haunts typically frequented by early 20th-century English aristocrats, such as the fictional Crawleys, in Belgravia, Mayfair, Westminster and the City. Visit the shops where the likes of Lord and Lady Grantham might have bought their hunting outfits and hear behind-the-scenes truths and trivia as you go! Book and Save 10% Off Private Tour: 'Downton Abbey' TV Locations Tour of London by Black Cab.