Chris. I've looked at Lydden Hill website, it doesn't state a start time for Sunday. I know it's been around midday before because of noise restrictions imposed on the circuit. I'll give the circuit a ring on Monday and let you know for sure, also if you can get tickets on the gate or just online We'll be stopping off at The Airport Cafe for breakfast on our way over.
I bought a weekend ticket because it was only an extra fiver for both days. if i don't see you at the airport cafe, i'll keep me eye out for you at the track.
Quick update. For those going on Sunday the racing starts at 10.30am . Apologies for for the misinformation about the start times on the calendar, that's the times i was led to believe !!.