I`m going to Tong (betw. Bradford and Leeds) tomorrow with some guys from the NW4x4 forum. It`s £30 for the day and you need your MoT cert. and logbook. Food and jetwash on site. Never been but it`s rated a good site.
http://www.parkwood4x4.co.uk/
http://www.parkwood4x4.co.uk/