A London entrepreneur is attempting to secure funds to reopen disused underground stations for a variety of businesses including pubs and bars.
Ajit Chambers, the businessman behind the scheme, believes the forgotten stations and tunnels can be revitalised by opening up new businesses.
Chambers, who has set up The Old London Underground Company, is confident of raising the money for the refurbishment of 26 disused stations.
The idea also has the blessing of Mayor of London Boris Johnson, who said: "This guy has a brilliant plan to open up disused underground stations. My pledge to you is that we will do it if it doesn't cost a penny of tax payers' money."
Stations that could be reopened for businesses include Aldwych, which opened in 1907 and is commonly used for filming; South Kentish Town, which has been closed since 1924 and already hosts a sauna and massage parlour; and Euston, which is still a working station, but with a network of closed off tunnels, platforms and a ticket hall deep underground.
However, Transport for London, warned: "The majority of disused stations have not been used for many years and nearly all are next to the operational railway, which would present a significant safety challenge.
"We have had extensive correspondence and previous meetings with Mr Chambers and he is aware of the impracticalities of his proposals."