Philips seems to like to play the change the dollar sign for a pound sign trick. I thought only North American companies played that game!
Although this is not a UK seller, they do ship worldwide and they are very quick about it. They also have the best prices I've been able to find on the net and in local brick and mortar stores.
http://www.bhphotovideo.comsearch for RFX9600
You can get an RFX9600 from B&H Audio Video in New York City for USD $349.95. That is insanely better than GBP 331!!! Even after shipping and any duty that you may pay.
Altough the unit is 110v, it uses an external DC power adapter so the unit itself is somewhat generic between countries. I believe you can use a standard plug converter to gender bend the North American pins to those bolt size prongs that the UK uses for electrics.