Hi Mark
after contacting you through email, glad to see you post up a thread.
Did you contact ( mickyboy ) like I said too, because if he can help he will, also remember regarding the light you could contact ( Devlish ) he as some refurbished lights I think.
Post up a couple of photo's of the damage, who's fault was the accident ? also that is high excess of £550 I only have excess of £100, sounds like you have about £450 worth of second hand parts to find, and about 3/ hours work to fit them, should you decide to save it.