Heart UK, the charity chosen by marathon sponsor Flora, is a small charity with 12 employees. It is expecting to double its annual income by raising £1m at the event, and plans to spend the extra funds on cholesterol family support centres across the UK and research projects.
Head of Fundraising Carole Gryglaszewska said: "We are absolutely delighted. We are not a large charity, but will make the most of the opportunity. We hope to have 1,000 runners on the day, including our 250 guaranteed places".
A spokeswoman for the Spinal Injuries Association, the London Marathon official charity, said the extra funds it raises would be spent on its Rebuilding Lives through Sport campaign, which will be launched this summer.
Most recent figures from 2006's race show the marathon raised a total of £41.5m for charities. Wellchild, the marathon's official charity in 2007, is yet to announce its total income from the event.