The designs for the London 2012 Olympic Stadium, were revealed today, marking a new approach to the design of sports stadia.

The innovative new design was unveiled by London 2012, as it announced construction of the venue will start ahead of schedule.

The design features a 'stadium bowl' holding the 25,000 permanent seats, surrounded by 55,000 demountable seats that will taken away after the Games.

An Olympic Stadium with such a large demountable element and mix of temporary and permanent seating has never been attempted before.

After the Games, it will be transformed into a 25,000 capacity Athletics stadium and will host a variety of sporting, educational, cultural and community events. It will be a sustainable and vibrant facility, attracting other businesses and investment and acting as a hub for the communities living in and around the Olympic Park.

The Stadium design was launched today by: athletes Marlon Devonish and Montell Douglas; John Armitt, Chairman of the ODA, Sebastian Coe, Chair of the London 2012 Organising Committee of the Olympic and Paralympic Games; Tessa Jowell MP, Olympics Minister; Ken Livingstone, Mayor of London; Colin Moynihan, Chairman of the British Olympic Association; and Rod Sheard, of Team Stadium, the consortium working on the project.