Cannot browse or FTP to website from work networks (not same domain as AD!)

Hi. I've had a problem a few days now where users on the main company networks (3 sites) cannot browse to a site www.aurignycam.com hosted with easyspace. One of the cameras is updated from within the network, and images
uploaded. At the moment this cannot happen as FTP also won't connect to the
server, hence the last camera appears to be stuck from ten days ago.



PCs at another site of ours works ok (BT service). My home PC works ok (same ISP as at work). Internal dns is ok, ping and tracert work ok. Easyspace have checked but cannot see our IPs
trying to connect. The local ISPs (Sure and JT in Guernsey, UK) have checked
also, and can see the site themselves (just as I can from home).




I have connected my phone to the visitors wifi, which is separate LAN (so not affected by internal DNS, etc)
but ultimately goes to same router as the main...