I probably wouldn’t say siling with rain but would understand the phrase.
My mother/mum would say “Don’t mither me” if she was busy and didn’t want to be disturbed.
Fine fettle when something/somewhere is looking good. Granny would say “That room needs a good fettling” if it needed cleaning or tidying.
“Don’t be mardy” was said if you were threatening tears over something trivial
And “it’s mizzling” is a mix of mist and drizzle.
Does Israel want full scale war in the Middle East?
Well, well. Is it ‘global warming’ or ‘cloud seeding’?
To think that London, or anywhere else for that matter, does not belong to any one demographic