Chris J Dixon formulated the question :
williamwright wrote:

On 09/04/2021 19:07, Clive Page wrote:
In fact I can just recall the old 15 amp 3-pin plugs which preceded them
and I don't think they were all that much smaller even though they were
fuse-less.

They were bigger.

Does anyone remember this monstrosity?

https://www.plugsocketmuseum.nl/Fitall1.html

Chris

Yep, I used to have one, wired to a 13amp socket - in the days when you
were faced with a variety of plugs.