Question Author
Many thanks...I have just come off the phone to SKY and managed to talk to somebody called Ken, who was terribly helpful ( unusual for SKY ! )
He said that on my switch-off day, I would still get loads of channels, like BBC 1, BBC 2, etc. I wouldn't get most of the rubbish programs that I don't watch now so no loss there. The + feature won't work and neither will the HD (HD being the biggest con in recent history...hardly any difference to SD )
So I will save £29.99 a month, which I will use to pay the gas/electric bill instead !
Happy days !