Boris Johnson has apologised to London businesses whose trade was hit by the Olympics.
The mayor denied claims the capital became a "ghost town" during the summer spectacle, but admitted tills failed to ring in some shops after figures showed trade dipped in parts of the city.
He told LBC 97.3 radio: "I'm not going to pretend it was a bonanza for everybody and for those that feel hard done by I'm sorry for the losses or low takings they had.
"But the overall economic benefit to London of people around the world seeing a city that can deliver an amazing event like that so successfully was incredibly positive."
Athletes taking part in the Games are putting the finishing touches to their training, ahead of Wednesday's opening ceremony. Going for glory on the tennis court are Andy Lapthorne and Marc McCarroll. The players, who both live in Middlesex, train in Roehampton.
Malaysian athletes arrive at Heathrow airport ahead of the Paralympic Games.
British Airways said today would be its busiest day for Paralympic arrivals at Heathrow.
BA is flying in Paralympic teams from 25 countries including ParalympicsGB who are thought to be arriving at Heathrow next week from their training camps abroad.
Along with the athletes, BA is also transporting around 300 wheelchairs and sporting equipment such as firearms, weapon bags, physiotherapist cases, bike boxes, tandem bikes, bow and arrows and hand cycles.
On most days, the number of people travelling to the Olympic Park will be as many as travelled there during the Olympics, with up to 215,000 spectators expected.
The rowers who'll be part of team GB for next month's games are expected to be announced today, by The British Olympic Association.
Great Britain took a team of 43 rowers to Beijing, winning a haul of six medals.