I've just left BT..
I was out of contract and have just signed up to Vodafone's fibre broadband deal. I have two BT YouView+ Plus Box Humax DTR-T2100 / 500Gb boxes that I was planning to carry on using.
When I called BT to cancel their services I was told that when they cease providing my internet and TV they would remotely freeze my hard drives so I won't be able to watch any of my existing recordings or record any more programmes. Also they said my apps won't work any more and catch up won't work either. Is this true? Must admit the guy I spoke to in their cancellation department was laying it on pretty thick to try to get me to stay..