Silverstone is a GP track, it REALLY doesn't care about being a track that people spectate at and it has always seen race fans as people that need to be accommodated rather than served well. When I went to my first race there, the 1979 British GP, the first ever Williams victory, I stood with my mum and dad on the old Abbey straight and all I saw was 70 laps of crash helemets and roll bars. It was terrible but we were at least close to the track and didn't have to look through fences. In 1981 when it returned (1980 was Brands) we took a seat in the stands on the start finish straight, which where much closer to the track back then, if still crappy quality. I remember walking around the back of the pits on the Saturday and Sunday and was able to get to the back of the garages. I stood there watching Gilles and Pironi talk, the 2 of them and me and my dad just listening. I walked where I wanted. There were no toilets it seemed, there were massively expensive foods but it was a really fast track I could walk around completely and at all places I was right by the track and, bar Abbey straight, have a great view.
Today I can pee in many many toilets, but everything else is broken.