Budget of £500,000 – a one bed flat in South West London or a 7 bed development opportunity at No.1 The Thames? Located in the middle of the Thames Estuary, accessed by boat or at low tide, you could be the new owner of an abandoned fort that has recently gone on sale. It could be transformed into a house, hotel, nightclub or casino. The building was part of Britain’s first line of defence when built in 1855 so rest assured it is bombproof…and at least no noisy neighbours but severe rising damp at high tide (every day!).