Sorry if it sounded like i was trivialising the post Jamie. I need to do something with mine and i,m going to start by boxing off the rear arches, insulating the floor and rear side panels with something like "kingspan" solid foam insulation. Another place i felt needed looked at was the seat box below the drivers seat. Mine has under bonnet insulation although it doesnt appear to be of much use. I,d be careful if putting another layer into the fuse box in case it dislodged some of the relays fitted there.