The Princess Royal has indicated that she will play a full part in lobbying for London's 2012 Olympic bid before the final vote in Singapore on 6 July.
6 June: Paris and London fare best from inspection reports
17 June: Africa Olympic conference, Ghana
21 June: Mediterranean Games, Spain
6 JULY: Final vote, Singapore
Princess Anne has a key role to play as she is one of three British members of the International Olympic Committee.
"I hope we can get across how well people in London understand what's involved with running a Games and how we propose to support them," she said.
London is now seen as the main rival to Paris for hosting rights in 2012.
The two cities came out on top, with Paris clearly ahead, when the IOC evaluation commission's report was published on Monday.
In the past, Princess Anne has not taken such an active role in lobbying fellow IOC members.
But she was involved in presenting London's plans to the commission when it visited the city in February.
She also attended a dinner hosted for the inspectors by the Queen at Buckingham Palace.
British Olympic Association chairman and fellow IOC member Craig Reedie said: "I am sure she will be active in Singapore.
"Looking at the hospitality she did with the evaluation commission, the time she spent with commission members and the time spent with the president of the IOC at our centenary celebration last week, there is no question regarding her commitment to this bid."
Reedie added: "I think there is a sufficient body of support for a London bid, enough to make me think it's worth making every possible effort to get over the line.
"It might just be that the Brits have got their act together."
Speaking at the BOA's annual general meeting, Princess Anne praised London's bid team.
"I was enormously impressed by their performance when the IOC evaluation commission visited in February," she said.
"They really knew their ground and what they were talking about. I hope we can reflect that in Singapore."
The princess believes the strong support from British fans at the Athens Olympics last year will help persuade IOC members that there is public backing for London's bid.
"Team GB's performance in Athens had another benefit in that it was supported by thousands of spectators who went there and who indicated the level of support for our Olympic athletes," she said.
"Others on television took advantage of the little red button (on the BBC's interactive service) to watch more of their own particular interest.
"The degree of public interest and the number of British spectators is something we would do well to highlight to the IOC."
Britan's third IOC member is former Paralympian Phil Craven.
None of the trio will be able to vote in Singapore on 6 July, unless London is eliminated at some stage.