Cost of young driver insurance drops by adding additional drivers

My 18 year old son's best quote for a clio was £2500, by putting both parents as 2nd and 3rd drivers the same cover dropped to £1550. There's also a heavy loading for the first 3 months after you pass the test so if you can wait, it will also drop. Quinn direct are the cheapest for provisional drivers but expensive for full licence holders so can jump silly amounts when you pass, get quotes for both before taking provisional cover.