Right, I have started on this. I actually scratched one sticker off with my thumb nail but then took the rest off by applying sticky tape to the top of the excess decal and gently peeling off. Worked a treat. Unfortunately there was no Rothmans decal on the bonnet but I have ordered a full set of decals including the Rothmans crests from
this site so watch for a further update in a week or two when they arrive!