The government will provide£2m of new funding to help boroughs and voluntary organisations set up their own summer universities. DfES also expects to announce a generous offer shortly from a charitable foundation which will provide a further significant boost to this project.
The network so far includes the boroughs of Tower Hamlets, Camden, Islington, Redbridge, Hackney, Newham, Royal Borough of Kensington and Chelsea, Waltham Forest, Brent and Southwark.
Speaking at the launch in Bethnal Green, Mr Adonis commented:
'This project fulfils our aim of giving every London teenager the opportunity to take part in summer learning. This programme helps children to reach their potential and we know it works - Tower Hamlets Summer University, now in its10th year, has already proved that. A key feature of the summer universities is that it builds on activities that we know young people want to do.
'Research shows that pupils who attend a summer programme reap benefits at school. By making learning fun - we can raise attainment and help young people to reach their true potential.
'I am delighted that some major organisations have signed up to support the programme - London Met and London South Bank universities, Young Enterprise, the Roundhouse and the Duke of Edinburgh Awards - so there is a good deal to build on. I am confident that the pan-London Summer Uni will become a significant legacy of our London Challenge programme'.
Guests at the launch were invited to sign a giant map of London to demonstrate their support for Summer Uni London.
The event also marked three years of London Challenge, a Government programme to raise standards in London's state secondary schools.
Sarah Davies, executive director of Tower Hamlets Summer University and Summer Uni London commented:
'Summer Uni London provides us with a great opportunity to be radical about how we support young people, to harness their energy and enthusiasm and to inspire young people to help us develop a wide range of fantastic activities for them, across the capital.'