How on earth would anyone know the answer to that question?
Also this is partly to do with the reasons all our vm bills go up,, whats wrong with just subscribing to vm for bb only? and then steal other services because you have already stated you are going to do that anyway.
Anyway what i can tell you is there was teams specifically employed to disconnect customers who cancelled thier subscriptions in certain areas, as far as i can tell it was mostly in deprived areas this happened but not only that, cables were being cut in the box meaning it was not possible to reconnect even if your cab was left open or you had cab keys at your disposal.
Tbh Nitro i am all for using a vm feed if they stupidly leave the feed on which does happen but nobody can tell you if it will still remain active after you cancel, its basically a how long is a piece of string question that.
Also if you used your brain i think you might find you will have a legally binding 14 day cooloff period anyway.