does anyone know where I can find a list of which cars are in each insurance group ? (say for up to 10 - 15 year old cars)

Parkers list insurance groups with all their car reviews on their website

David

we've been using that, but it would be allot easier if they where just on a list....

even there 'help me chose' bit doesn't have a cheap insurance option

You can search by insurance group on parkers rather than looking at individal cars, wouldnt take 5 mins with a printer to knock up a list.
Linky