Andrew Gabriel wrote:

I recently bought Aldi's power meter,
which I have found quite instructive -
I was surprised that my Sky box and TV
took 20 watts each in standby.

Set top boxes are imfamous for not reducing power consumption
in standby mode, and are probably largely resposible for the
current standby hysteria. Most modern TV's reduce their standby
power to negligable levels in standby mode or they can't be
sold in a number of countries. How old is your TV?

It's a Sony 26in TV (not flat screen), about 8 years old I think.
On re-checking I see that it only takes 12 watts in standby,
while the Grundig Sky box takes 30 watts.

Actually, I don't see any way of putting the Sky box on standy -
this is the consumption with the TV off.