Well we've seen what a spectacular race it was at Silverston, with some drivers influencing the others to take a little bit more risk in overtaking.
What is the biggest reason in my eyes is the testing on this circuit during the complete year. Not so much of importance that it is being tested by F1 cars I think, but because of the testing, there's more grip on the outside of the corners. A lot of overtaking has happened at the outside of corners, and even if that didn't work, the persuing driver was then in a good position, especially right after Stowe.
Don't you all think it would be a good idea for the FIA to encourage much more racing on F1 circuits by other disciplines?