My usual lift share buddies aren't going this year so I have 1 or 2 spots free in my car (2 if you travel light, 1 if you take more kit).
I plan to leave Maidenhead around 6am on the Wednesday and meet up with friends at the services on the M5, so I'm happy to pick up within a certain distance of the M4 along the way, or within a certain radius of Maidenhead. We always go M4/M5 and then a bit of a back-route to the West Car Parks which bypasses some of the queues.
I plan to leave camp around 7-8am on the Monday.
Cost will be an equal share of the car park ticket (£45) and share of roughly £40-50 for petrol. Car is a Fiat Punto - no air-con I'm afraid, but windows down and some good music on it's fine