DON'T WASTE YOUR MONEY ON BT PRODUCTS! THEY'LL PROBABLY FAIL CONVENIENTLY JUST AFTER THE 1-YEAR WARRANTY!
STOP PRESS: Having had no joy in trying to get a repair/spare part, I went and bought a Siemens (Gigaset) model - what a difference! Not only cheaper. but with a real quality feel, and more facilities.
And yes, I was right! 'Made in Germany' is there for all to see! Far more comforting than 'Made by BT'. I'm just wondering why I stayed loyal to a seemingly dud product for so long!
EXTRA: I did find an excellent firm, actually also situated in Devon, and they supply spare parts for BT and other products. They sent me a new power adapator, which is what had actually gone wrong, and it was pretty cheap, and quick coming. I'd thoroughly recomend them.