Quote from Captain Haddock:
Update from me:
I've changed ISP to BETHERE. I was on 6 meg I'm now on 11 and the data issues have gone, very happy.
Thanks for the update. As mentioned I've solved my problem through a VPN but I'll take a look at BeThere. If they offer a reliable service and are likely to be around for the foreseeable future I will certainly consider switching to them.