Will watch in van if have the time, I too don't have sky so just C4
If you go camping at British F1, the next to circuit Woodlands campsite is the only one to go to in my option, loads of entertainment. Been 3 times, this year arrived Wednesday left Monday. Also been camping at Spa which was great but beware loads of hills.
Next year could be last year at Silverstone, don't believe it will be but possible so we will be going again.