Not aware of anyone doing this Lee other than having some instruction on the official track days. Might be worth asking around on Sunday at Brands Hatch.
The Thruxton Driving Skills day was an excellent opportunity to take your car out and drive it in a fun, controlled but fast (if you wanted) way with expert instruction provided for those of us not so used to track driving.
Highly recommended for those who do not drive on tracks on a regular basis.
The event will be repeated next year (but not necessarily at Thruxton)