When using the grandstand, unless it's very hot, take a warm jacket and something to sit on that comes down behind your legs. Silverstone is noted for cold, high winds, I know, I've raced there as well as spectated. The wind blows through the back of the g/stand and can be absolutely freezing. Also, something like an air cushion cos the seats are not the most comfortable! Get them covered and you'll have a great time. Oh, and if it's sunny, sunglasses and a peaked hat that keeps the sun burning face or neck (turned back to front). I agree with the previous 'ride with peaks' about traffic. We go by m/bikes and stay over till Monday!