[Sephiroth]

I run the Thinkbroadband quality monitor 24x7 and my latency there is around 18 ms. So 29ms is high.

I can see why, - it seems that you have upstram congestion.

What is the latency when you test inside the VM network using speedtest.net and selecting a Virgin Media host? If that drops to 10 or 12 ms then the bottleneck could be at the interconnect/peering point out to the internet.