Got a responce back from the UK distributor:
Hallo Kane, we are waiting for the UKRCC and OFFCOMs approval before we can import these transmitters. Currently we arent able to bring them in the county. Hopefully we will have some news on that front shortly.

So there are no DX6s in the country.. So at the moment, it looks like the only way to get hands on these is to order from the states. If anyone finds differently, please post here.