asterisk users - Dec 2004 - Where to get a Polycom IP500 in the UK?

I've been looking at Asterisk for a while now, and want to set up a small 
installation at my house. I did originally want to get a Cisco IP phone, but 
due to price and it not being easy to obtain the SIP firmware I have decided 
again them. I am very interested in the Polycom IP500. I can find many 
places in the USA that sell it but nowhere in the UK.

Also can anyone recommend some good VoIP suppliers in the UK?

Thanks,

Martin Mitchell