They have policies for certain vehicles and activities that are cheaper than your bog standard car cover. Lots of import 4x4 owners get cheaper insurance with them, specially if the trucks have mods.
These policies are not meant for normal drivers and have certain conditions, ie low annual mileage, belonging to an owners club, not having had more than 1 accident in the past, you earn no no claims with these policies nor do you get cover if you use another car etc....
Unfortunately they could not find my truck on their data base, even though its had 6 (yes six) previous UK owners on the V5 since 2004 and Euro car parts site recognises my reg........