David Cameron said a new £600 million Big Society fund would be used to help tackle the country's "deepest social problems".
The Prime Minister claimed the money would help "smash away" the "patronising assumption" that small charities cannot do big things.
The initial capital for the fund will be an estimated £400 million in unclaimed cash from bank accounts dormant for more than 15 years and £200 million from Barclays, Lloyds, HSBC and RBS.
More top news
A German woman was arrested after boarding an easyJet plane at Gatwick Airport without a passport or boarding pass.
Former Manchester United manager Sir Alex Ferguson has told ITV Sport he twice failed to sign Wayne Rooney before finally getting his man.
Rowan Atkinson slipped back into character for the 25th anniversary of Mr Bean and took his mini for a spin outside Buckingham Palace.