A mixed day for us here in Silverstone: the drivers looked competitive in both sessions but it was annoying that Lewis couldn't complete his programme this afternoon because of an engine problem. Nico was able to finish his programme in a normal way with some good long runs and, because the data is open between both drivers, Lewis and his engineers will be able to learn something from that. I want to say a word for the incredible fans here, too. It was only Friday but we could see full grandstands and huge support for Lewis and the team today. This is what makes Silverstone such a special race on the calendar and we will be working hard tonight to make sure we can deliver a competitive and reliable performance tomorrow and Sunday.
We managed to get a lot of useful homework done during first practice, despite the disruptions with yellow and red flags, and both drivers completed longer runs than normal on high fuel owing to the threat of rain later in the day. In second practice, we managed to do competitive runs on both the prime and option tyres with Lewis and Nico. Lewis then had an engine stoppage as he was beginning his long run on the option tyre - and we have yet to diagnose this precisely. That unfortunately cost him the high-fuel running in the session but our plan was always to change this unit overnight, so there should be no direct impact on tomorrow's programme. Nico managed to achieve our objectives for the session and the data from his runs with both option and prime tyres will assist both him and Lewis for the race. The pace seemed strong for both cars, although we have a lot more work to do tonight in order to find a perfect balance. Not only do the windy conditions make this challenging, but it is invariably difficult to get the tyres working at their best over a single lap through the wide variety of slow and high speed corners here at Silverstone.