Can you get one day's insurance for this? I live pretty much next to Cadwell park 
You can indeed, track specialist insurance can be found quite easily on most trackday websites. It may be worth ringing your current insurers however and see if they offer a 'bolt on', the worse they can say is no. On a side note, I also live close to Cadwell (caistor high st) and have thought about this many times BUT after much delgation, I would definitely have my first trackday out at Blyton rather than on a bonkers tight, fast and technical track like cadwell.
