I am an aussie that bought a bike in Traunstein (Barvaria) and not being German could not hold regestration for it.
I travelled to the UK via Hook van Holland/ Harich and went to Worster near Stratford upon Avon to register the bike in my name. The while exersice once in the UK took about 36 hours! They were very helpful! I only had to get a MOT, insurance and pay 80 quid. I was out of the UK within 2 days also with an export cetificate. Easy as that!
Australia is different, it took me nearly 4 months to register my bike here and go through all of our red tape! This would be one of the worst countries in the world for this type of thing with all public servants having their hand out for money!
Anyway mate, good luck.