Photos: iPod and BlackBerry lost property mountain

Transport for London's (TfL) lost property office covers two entire floors beneath Baker Street Tube station and stores any items left on the underground, on London's buses, in black cabs and on the Docklands Light Railway.

Ted Batchelor, customer service supervisor at TfL's lost property office, told silicon.com: "We can keep up to 40,000 items at one time."

Above are just some of the shelves housing travellers' lost gadgets.

Photo credit: Transport for London