We are getting one of those electricity monitors
here
We do have a plug in one where you plug the appliance into it and it tells you what that particular appliance is using.
My tumble drier is a 7kg but my washing machine is 6kg so I do tumble a 6kg load. It costs around 32p but it is only 1 year old AEG thing and it is a sensor so stops when things are dry.
My washing machine which is a bosch uses electricity even when it isn't on, which we only discovered when we plugged it into that device! We now have it on a switched socket.
My advice as a previous adviser of electricity consumption (used to work for npower many years ago) is to go into every room and turn off (if possible) ANYTHING plugged in. Decide whether it needs to be switched on all the time. You will also be amazed at the amount of electrical stuff you have and your children!
Any appliance/device with a low voltage transformer plug ie the massive plugs not a normal plug (mobile phone chargers etc) uses electricity all the time turn it off also stereos anything electronic ie laptops, cordless phones, wii, playstation,, all use electricity all the time when plugged in whether on or not.
It is why it is good to have switched sockets or switched extension leads to turn everything off.
Hope this helps everyone.