But she said: "I met Prince William at Buckingham Palace in June during a reception for the bid.
"He was completely engaged. He really wants the Games to come here. He was extremely knowledgeable and very involved. The Royal Family are very supportive."
Rivals Paris, Madrid, Moscow and New York are expected to bring highprofilepolitical figures to the vote to back their campaign.
It has even been suggested that French President Jacques Chirac will be able to make the journey to Singapore before rushing off to the G8 summit in Scotland.
Blair has no chance of doing this because London officials are making their presentation much later in the day than Paris.
Assuming Labour win a likely election in May, Blair would almost certainlybe represented by Tessa Jowell, even though it is possible that she may have moved from her job as Culture Secretary by then.
It is likely that Jowell, who has got to know senior International Olympic Committee figures in the last year, would be handed the role of Olympics Minister immediately after the election in addition to any other portfolio she was given.
