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There's something we're BUS-ting to tell you.
London Transport Museum has launched a series of day excursions, on vintage RTW buses — a predecessor to the famous Routemaster.
Two initial dates have been announced: a ride to Kew Gardens (16 May) and another to Greenwich (18 October).
Visitors start their day at London Transport Museum, with a talk about the golden age of early 20th century poster art commissioned to encourage Londoners to make the most of leisure time, by using public transport to explore the capital and its surrounding countryside.
Visitors then board a restored red RTW double-decker, taking in the sights as they journey to their destination. Here, they enjoy private tours or expert talks, before lunching at a historic local eatery.
Then it's back to the museum, to delve into 200 years of London's transport history. Not a bad little day out. Provided you've the cash to spare.
Tickets are on sale now, and cost £90 (£85 concessions), including morning refreshments, entry and access to exclusive activities at each destination, lunch at a local eatery and a one-day pass to the London Transport Museum. For more information, visit the heritage days out website.