The Kingsway Tunnels were originally built as an air raid shelter in 1940 and have been used by MI6, the Public Record Office and BT, but they have not been used regularly since 1990. "We are looking for a purchaser with the imagination and stature to return the tunnels to productive use," said BT group property director Elaine Hewitt. "The site has the most fantastic history and, now that we have no requirement for it for telecommunications use, it is right that we should offer it to the market."
Designed to provide air raid accommodation for 8,000 people during the Blitz, the tunnels are 30m below ground and equipped with water and electricity. Planning restrictions rule out the conversion of the tunnels into a hotel, home or office.
A BT spokesman said: "Some unusual suggestions are a snooker club, cinema complex, Bond villain lair, bowling alley, archery range, roller disco, sports gym, firing range or somewhere to keep bankers."
Click here for more information on the tunnels, including a plan
■ We want to hear your suggestions about what should be done with this prime bit of real estate. Email jessica.rowson@emap. com with your ideas and the best five will receive an NCE mug!