Vampire Appliances

Unless you are multi-millionaire, don't even think of looking at your Utility bill or your ceiling because the first would have gone through through the second after 1st April and as much as the Government are trying to blame Russia invading Ukraine for it, they were on their way up long before Vladimir Putin decided that what Ukraine needed was a lot more missile craters.
My nan had a thing about going around turning off everything electrical at the wall before she took out her teeth last thing at night because as she said 'I'm not paying for something i'm not using at night' which could apply equally to her teeth or the TV but the wee small hours is when i charge my mobile phone and my vape batteries and when i turn off the living room light their are a number of little orange glowing lights of things on stand-by so was nan right and should things be turned off at the wall at night?   
A recent study by the UK's largest supplier of electricity says too right we should as as much as 25% of our electrical usage is down to what they called vampire devices sucking our power during the night even when we think they're switched off.
I always assumed that once my phone, Kindle or vape batteries reached 100%, they just stopped but apparently all chargers draw energy constantly, even if they're not charging.
TV's use power constantly unless switched off at the mains, anything with an LED display or a stand-by light does also such as the microwave, oven and thermostat, stereo and DVD player, wifi router, printer and Sky box, dishwasher and washing machine I begin to count the number of chargers in my house that i never bother pulling out of their sockets and all the vampire appliances i leave on stand-by and doing some quick mental calculation based on my latest reading, it comes to approximately a billion pounds a year i am wasting which means i either have to bang a wooden stake through the Sky box or just remember to switch it off at the wall.