so it was about a 1.5 hour drive from heathrow, (in a 1.6 focus) with free parking.
general entry was 48 pounds, (roughly 100$) this must be purchased in advance no tickets at the gate.
that gets you entry to the pits, the supercar paddock, and both the hill climb and the Forrest stages, (basically everything but the grand stand and corp tents)
there were 350 cars/bikes there with a combined value of 275 million Pounds, and they were all racing!
It's a 3 day event, and every car/bike gets 2 runs a day each in their class, eg pre war F1, modern F1, Le Mans, supercar, bikes, EV.
plus displays from the red arrows.
and you could just wander up to any point of the track and there would rarely be more than 1 or 2 deep spectators. other than in a few places like the start line.
Plus there was a retail area for lots of aftermarket things, model cars, plus all the manufactures.