BS 1363 isn't an EU plug though. Doesn't have issues with separation of hot and neutral wires (and does have a fuse for the hot wire built in) and nor is it specified with the idea that electrocution risk is no biggie or that not falling out of walls (a big issue with some Euro plug and socket combinations too) is up to the manufacturer. And having one type of plug for all regular home appliances in the UK and a different one for three phase feels like a more sensible split than the range of 2 and 3 pin options of varying quality and compatibility that CEE7 and NEMA present.