Was trying to figure out a way of insuring a car so I can drive it home once I bought it and came across this:
Norwich Union Short Term Car Insurance
I believe theres also dayinsure.co.uk
Basically you can insure a car for 1-28 days. £10.50/day for first 3 days £4.20/day after that for cars in insurance group 1-17 and <£40000
For group 18 and over its double that.
It's comprehensive cover. Although you may need to be over 25 for some groups.
Some of you may find this useful.