London 2012 Olympic organisers have met with New South Wales premier Bob Carr, who oversaw the planning for the highly successful 2000 Games in Sydney.
Lord Coe, the London 2012 chairman, was given a message of support and solidarity by Carr in the wake of last week's bomb attacks in London.
The incidents occurred the day after London was awarded the 2012 Olympics.
But Carr backed London to host a safe Games, saying: "No-one does security better than the British."
He added: "We stand ready to share our experience with our friends in London.
"I would like to see a team from London down in Sydney where we will arrange for you to be briefed on every last aspect of the Sydney Games.
"No-one knows more than someone like me the atmosphere of a bid committee at this particular moment."
London 2012 chairman Coe and chief executive Keith Mills are expected to take up the offer and visit Sydney before Christmas.
Coe said: "We all accept that Sydney was the high-water mark of Olympic Games, both in organisation and the concept behind the Games.
"It happened to be the biggest birthday party in the history of the Olympics.
"There are 17 themes in the candidate files and there are 17 themes that the IOC want us to deliver on. Sydney delivered on all of them, and we will look across the board.
"Security has always been one of the most important parts and in practical terms, the thing all Games hinge upon.
It is no higher than it was, it was very high on our list of priorities to get it right."