Second practice at Silverstone, and a further ninety minutes for the teams and drivers to continue working through their scheduled programmes. We know several of the teams are bringing updates to the British Grand Prix, with both Caterham and Marussia particularly outspoken about their new parts. Marussia may not be as prepared as they like after the events of the week (love to María!) but I'm sure the paddock will support them. Meanwhile, McLaren have also hinted at some massive changes incoming over the next two weekends. See what you can spot!