Only Red Bull really know how much the off-throttle diffuser restrictions cost them on Saturday at Silverstone. With a confident-looking Mark Webber on pole, they locked out the front row nonetheless, though the proximity of the Ferraris bodes well for a tight Grand Prix on Sunday. Unfortunately for British fans, McLaren fell well short of the front-running pace, diminishing hopes of a home win for Jenson Button or Lewis Hamilton. We take a team-by-team look at the pre-race form