Hi thanks for your help. The problem is now sorted. At first the IT department at the hcc.gov.uk wouldn’t talk to me, saying "they don't take external enquiries" and adamantly sighting the problem at EUKhosts end. After shaking a few trees I managed to get them to look at it and they needed to put a route in to our IP address and now all works fine. My only worry is that they filtered out the IP address in the first place for security reasons meaning that IP address that we use for my clients web site hosting is in someway not a trusted zone. I wonder how many other organisations have implemented this "security" measure.
Thanks again for your help