Tube light is a slang used to describe nitwits. We are all too familiar with the bulb switching on in comic stips. And, of course, they save us from having to live in the dark ages. But how much ...

Even the light bulb, which was created by Joseph Swan in 1880, came from these shores. Meanwhile, 88 per cent were not aware the cat flap was, allegedly, invented by Sir Isaac Newton so his cat ...