For anyone considering the GH3 or 35-100 lens Pany UK are offering 30% cashback via the Lumix lifestyle web site.
you have to register then email you details etc to be considered, I've just had confirmation I've been guaranteed 30% off the price of the 35-100 but it limited to the first 50 applicants and there were less than 10 left when I applied.

So have a look and good luck.