I can't remember where I read it but a quick search came up with this cept it says WW1....
Bangers are so-called because after the First World War there was little meat in sausages -- just scraps, cereal and water -- so they sizzled and spluttered a lot when they were frying. It sounded as if there were mini explosions, or bangs, going on, hence the name bangers
The more I read the more I'm inclined to think that the English aren't aware that seasonings and spices exist and they don't know chit about sausage making. I should have known they'd be ignorant since my ancestry is mostly English.
