Bonnet/roof wrapping in and around Cambridgehire?

Hello (again!) My bonnet and roof have been wiped out by stone chips and the local moggies. After seeing a VW van in black with a carbon bonnet wrap today, I'd like my black Fabia estate to get the same treatment. I've phoned around some companies near me and have been quoted up to £400! This seems a tad expensive. Does anyone know of any decent companies that'll do it for a good price in my area?

Many thanks in advance