[Ignitionnet]

A number of ISPs subscribe to the Ofcom code of practise and give an estimated speed at the time of ordering.

Virgin do give a performance figure however it's a very carefully put one which flatters them over ADSL providers.

Virgin are far from transparent with the variety of limitations they put on their customers' service in order to justify unlimited advertising, it is debatable how much of the moral high ground on being open they can supply while they continue to advertise an unlimited service with 3 separate controls on it and continue to warn customers and terminate their service for breaking a limit they won't give.