[BrianHughes]

That's the USP of Virgin Media...

I'd give it a go over VOIP - it may be a little slow, but could work. Purchasing a cachecard and the rest is a little overkill if you're looking to keep costs down - may as well try a PSTN/VOIP adaptor (which you'll need anyway to continue to use a half-decent phone) first.

I doubt it'll work at all nevermind slowly. There just isn't the bandwidth over voip.