Phoned that carbon wrap company up for a quote earlier.
Gloss/matt black wrap - around £200 per panel
Gloss/matt carbon fibre - around £250 per panel
So for the bonnet and roof to be covered in carbon fibre, you're looking at around £500.
Costs include VAT and labour.
I am VERY tempted!! Not sure which to go for though - gloss black or carbon!
Hope this helps anyone, like me, that was tempted by this post....