It has started …
The event will start just after 10:00 when the Moon will begin to pass between the Sun and the Earth.
It will peak nearly an hour later, between 10:50 and 11:00, and end about 11:45 - although times will vary slightly depending on where in the UK you are.
That would explain why the sky’s gone moody 
Totally grey clouds here so might as well have given up before it started.
Thanks for reminding me.
In my panic - I was grabbing the tripod - until I realised it wasn’t going to achieve much @ 1/32,000 sec.
My brain even remembered to change all the rather extreme settings back to normal - before I grabbed the camera in coming days and wonder why everything came out black. 
It was 10.58 up here at its maximum
Aww, missed it. 
)