Thanks for that guys, any idea how you access it from the road?
Not sure if this will help, but I'm sure if you drive down the road between Houx Annex and the track, there's a gate which they will let you through. I think this is Chapelle. Although don't curse my name when you're sat there in your car being laughed at by the local tabard wearing meat heads.
Most people on Houx Annex will walk through Chapelle on route to the action, so get there early for a spot that's out of the way.
We had a Chapelle pass last year, but after a conversation with said tabarded meat head on the entrance to Houx Annexe, he let us in. Couldn't tell you what we said to him. Could well have been about grandma's pen being in the garden...