Hmmm just got a text from a friend of mine saying
"Police may be stopping people who are driving with snow on the roof and could get a fixed fine of £60 and 3 points, as it is a hazzard and breaks the highway code"
Aparently was also on Radio 3 found this on the net about it http://www.metro.co.uk/news/849809-d...ow-on-car-roof
Sorry if this is a repost, just thought it could be usefull info!