Ok, fine.... look I appreciate you both trying to help.
Fact remains, Sky Go used to work perfectly fine, on both my Poloroid TV and my Toshiba TV using "go.sky.com" as the access address.
I'm not going to buy/rent a totally seperate box, just to display something on a TV that's upstairs from where the main sky box is in the living room and only gets used for a few hours a week on an evening, using app which I have access to already without any extra as part of my sky package.
It seems that sky have a habit of doing things like this, beacuse I went through exactly the same crap with them when they decided that we the consumers where not allowed to use plex on our NowTV boxes, and now it's the same again....
I guess I'll just have to find away to do it illegally, and hack it like I did with the NowTV unit.