You need to start the leaving process before they'll give you a proper offer
It's 30 days notice and they'll pester you to stay a few times. Find out the cheapest option you can get from uswitch, hotukdeals or similar and then tell Virgin you're leaving. Wait til they call you to persuade you to stay etc.
yeah I read that earlier - already got the offer via the leaving process route
funnily enough - dont see much offers via uswitch. - new customer price is what they are offering me albeit 50p more
saw an offer earlier but it went after an hour when I refreshed the page
New customer price is normally what I go for when renewing. In the past it has seemed a decent price for what you get (assuming that you are happy with the service).
@musa as a few messages up