Sorry to bump this post back up but didn't think it was worth starting a new thread...
Quick update: I settled my insurance last week and the GTD is now written off. I've decided to go for something bigger, older, faster and generally more ridiculous, coz why the hell not! So I've bought a BMW 635D!
Thanks to everyone on here (special shout to P3asa) for your help/tips/knowledge over my short term of Golf ownership!