Mate all over the UK this is happening - Everybody is complaining about random disconnections for a week. Look at their twitter feed over the past few days, same problem. Virgin Media are just saying "hey look at the connection service status page to see if in your area there is a problem" when this problem is national, these random intermitten connection drops.
Gamemaster Khaleyd at your service - I'm with the dedicated tech team here at Blizzard.
Thanks for getting back in touch and letting us know about your thoughts. "Modern" and "Classic" WoW actually vary slightly in the way their connection methods works, owing to actual differences in game infrastructure.
There have been a few rare reports that certain router models combined with DS-Lite (IPv4/6 hybrid technology) setups on the connection route *may* be troublesome in that regard - your ISP would know if such a setup exists and could make the necessary alterations then.
Your help request towards them should actually be enough to get the ball rolling in that case.