Foxy wrote on May 12^th, 2010 at 4:56pm:

This is a PO Box, so it isn't a physical location.

The terms and conditions page gives the address 7 Priory Hill, Wembley, Middlesex, HA0 2QF. Companies House confirms that this is the registered address.

There is an entry on Yell.com for jrlinton.co.uk with an address but no telephone number:

42, Allington Close
Greenford
Middlesex
UB6 8PH

192.com lists telephone number 0870 777 8047 for Jrlinton Co UK Ltd at this address.