The Freeview box in the kitchen wasn't responding to the remote control.
First step was to fit new batteries in the remote - but no change. Pondered on how to check if it was working and recalled that a digital camera. can see an infra red control. Got out the camera and pressed a few buttons - and it appeared to be working - but it was also flashing most of the time.
I took it apart and found it was wet inside. Dried it and now it works. Obviously it was sending out confusing signals. No-one owning up to wetting it yet - but I have saved £20 on a new box - which may have ended up as a new LCD TV with built in Freeview.
The world is a little greener for avoiding a purchase.