Cheers for the comments guys, much appreciated.
Mess, they're already dirty so I'm guessing they'll be a nightmare to keep clean
Drumzz, a closer picture of the 'Chavs Hat' scoop or BBR Ram Air as its better known is enclosed and can be bought from here:
morego - Performance Car Tuning Specialists - BBR Ram Induction Bonnet Air Inlet Venturi kit
It's really effective and warrants the price even though it seems that its just a piece of mock carbon fibre plastic.