While I was in London, England, My Taxi Driver explained the following to me about bus route 15, its history and how this was will always be classic that I was able to capture this photo :
"London Buses route 15 (Heritage) Is a transport for London Contracted bus route in London, England. Running between Tower Hill and Trafalgar Square, it is operated by Stagecoach London. It is a short working of the standard route 15 and it is the only preserved AEC routemaster route.

***I recommend your local Walgreens, CVS or www.Shutterfly.com for printing purposes! A 20x30 poster Print is a great size for wall art.