Did a bit of t'internet searching, a company called unique trackdays had hired him that weekend to take people round the ring so a few people went round with him!
This video is quite good, the passenger just laughs most of the way round!!
http://www.youtube.com/watch?feature...&v=xXFlo-8E7vg
click on the youtube button on bottom right of vid and it takes you to their youtube channel...