Even the starting grid is on a gentle curve, leading into Allard. Look out for the laps to go board on the left and use this as a turn in reference marker. Try and apex late, to avoid using the whole of the track width on the exit. Leaving Allard the track curves left over a crest - following the seam in the middle of the tarmac is a good clue to the optimum line over the crest.
Just over this crest is the first of only two 'big brakes' at Thruxton, into Campbell - or the 'Complex'. Move from the crest to the left of the track and brake in a straight line, and downchange. This may even be a second gear corner in some cars. Turn in should be late, very late to avoid running wide after the apex. Try and keep the car hugging the right of the track leaving Campbell, as the left handed Cobb is vital to a quick lap.
The neater you are out of Cobb, the quicker you will be all around the vital back section of the circuit. Leaving Cobb, don't use the whole width of the track, just stay in the middle trying to maximise the flow into Segrave. If you have the right line out of Cobb, Segrave is flat. If you get Campbell and Cobb wrong, you will scrub speed off in Segrave and ruin the lap.
Segrave marks the start of the section of track which requires precision, bravery and balls. Leaving Segrave, move to the right and don't be tempted to turn in too early for Noble.
Again, there is a seam in the middle of the track. Follow this line, before moving in to the left for a late apex. Again, as one curve closely follows another, do not use the whole width on exit as you need to be well placed for Goodwood.
Goodwood is a very difficult corner. You approach it with huge speed, as you will have accelerated through Segrave and Noble. On exit, it also curves a little more than you may expect. In a powerful car without downforce, a flat in top entry looks possible, but is likely to cause a loss of momentum on exit. Practice makes perfect, and a tiny lift here may just settle the car enough to be in the right place for the exit. The apex is by the marshal's post on the right, but the exit is a long way down the road, after the kerb on the left. Less powerful cars, and those with plenty of downforce will not have the same issues here.
If you were quick through Goodwood, you don't have a lot of time to feel smug. An even bigger challenge awaits. Church is a thrilling corner in any car, whether able to take it flat or not. The turn in point is difficult to find, but there is a slight dip in the road which makes a good reference point. Turn in and aim for the apex curb. There is a big bump here, and you will need to pick a line that avoids it. Let the car drift on exit, towards the kerb (which you should avoid in the wet, unless you want to try and enter an aircraft hanger backwards).
If you get Church wrong, you will be a sitting duck on the long climb up Woodham Hill. Towards the top of the hill, it curves left then right, and you need to pick a defined line here that allows you to brake in a straight line. You can carry a bit of speed into the right hander of the chicane, but I'd be tempted to be a tad slower in to ensure a neat line through the chicane.
This is a great place for spectators, but for drivers is a little fiddly after the preceding blast. A wonderful overtaking opportunity, the kerbs are tempting, but on a track day I'd stay clear of them - particularly if they are damp.