In previous years, the sponsor and the race organiser have each chosen a charity to support. The charity for 2009 will be the Children's Trust.
Race organisers have confirmed that the charity fundraising structure will remain the same when the event's new corporate sponsor, Virgin Money, takes over from current sponsor Flora in 2010.
Virgin Money announced on Friday that it had signed a five-year sponsorship deal with the marathon and that it had selected Clic Sargent as charity partner for the 2010 race (Third Sector Online, 16 May).
Virgin Money chose Clic Sargent after consulting the group's charitable foundation, Virgin Unite, which already works with the charity.
David Bedford, race director of the London Marathon, told Third Sector: "The fund structure, which works, will continue. The marathon will have raised an extra £46m this year, and you have to be very brave to mess around with those kinds of figures.
"We already liaise with 1,250 charities directly - we know there are just so many charities out there, but you can't please everybody."