Help finding motorbike experiences - Moto cross/Supermoto/track days

OK need some help finding a day out for a couple of clients who also ride bikes. Been thinking about trackdays, but no one wants to take their bikes and also varying types of actual riding ability. So been thinking about maybe supermoto or a moto cross as an alternative to do something veryy different. Any thoughts/recommendations on any of the above - looking at no more than £300 per person.

been thinking about doing something like this not too badly priced and could be a good laugh!
http://www.tracksense.co.uk/offroadschool.htm

Look on ady smith school www.adysmith.co.uk a lot of people say there a great place to try but not yet try’d them. Pm hels cos she did the yamaha day

I used Ultimate Rider Traing for my DAS and they were excellent.
They’ve recently branched out to Trail days http://www.ultimateridertraining.com/default.asp?contentID=59 i’m going to do one soon.