Not the end of the world, lucky the bonnet wasn't creased because then you would have problems. As has already been said standard tf bonnet with the front skirt added on. Filling the vents in is easy enough and is something i am currently doing at the moment to mine.
So get yourself a new front bumper, a new front splitter either from ebay or from: http://www.moto-build.com/mgfparts.html then find yourself a bodyshop. A quick google search for body shop derby:
http://clementsbodyshop.com/
http://www.larklandsarc.co.uk/
http://derbybodyshop.co.uk/
I have never used any of these companies (i'm in Lancashire) but it should give you a starting point. Hope that helps, you could also try contacting the previous owner who was a member on dot.org if you want the work carrying about the original person who did it.