Work has started on the new £30m pit and paddock buildings at the Silverstone racetrack in Northamptonshire

The redevelopment, which follows a threat from Formula 1 chief Bernie Ecclestone to scrap the British Grand Prix or move the event to Donington race track if facilities were not updated, is being carried out by the Buckingham Group.

Work is due to be completed in time for the July 2011 Grand Prix. Four months of upgrade work to the circuit was completed last week.