Valued at more than $200 million, the boat is the 12th largest in the world, and comes with two helicopters, a 10-man submarine, a swimming pool that converts into a dance floor and a professional recording studio.

Dutch billionaire Marcel Boekhoorn's 52-metre Deniki, a regular sight at the Grand Prix of Monaco, is moored just a stone's throw away in docks which once were the destination of silks and spices from the far-flung corners of the British empire.

The Deniki, the interior of which is decorated with five different types of fine wood, has a bespoke wheelhouse devised to deliver the luxury interior of a Rolls Royce or Bentley.

Just opposite sits Westfield shopping mall group founder Frank Lowy's Ilona, a 74-metre beast with a fully retractable helicopter pad and two fold-away beaches on either side.

The arrival of the wealthy for the Olympic party is likely to strengthen London's image as a safe-haven destination of choice for the international rich despite Britain's worst economic crisis in nearly a century.

PLAYGROUND CAPITAL

Demand from the super-rich has prompted East London's Royal Victoria Docks to construct a special pontoon with personalised concierge service. Three superyachts are due to arrive there this week.

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