I know you can take constructive criticism on the chin Paul, overall I like it, although its not my cup of tea, I can see you have a flair for the customising stuff-that bike has had a lot of work done to it and hat off to you m8, I would only change 2 things on it to make it look meaner
The biscuit tin as Dirty has highlighted would look better (IMHO) with a stand-off Iron cross (or some other emblem) covering those holes, and, as I've stated before in a previous post-the exhaust, its from 'race stock', I would stick some slash cut straight pipes on there, chrome or black would look great, horizontal to the road would be my personal take on it, highway hawks maybe ? .
as for insurance value, you make the price and that determines your premium payments, I would go for £800-£1000
having muttered on a bit, the thing I love about bikes is the individualnessness , bikes can be made so much a personal thing-you dont get that with a car cough, cough, er,, a cage