In article , Phil L
writes

Also, I remember that geraniums have to be taken indoors over winter, what
is the best time to dig 'em up?

will the first frost kill 'em stone dead

Yes
or can they resist a bit of light
frost?
- how do I store them? - some of them are in baskets/planters etc which will
be easy to shift, but the majority are planted directly in the beds..

Less space consuming to take cuttings. They're very easy to root, and
you will have younger bushier plants for next year. Don't know whether
it's too late for reliable rooting.
--
Kay
"Do not insult the crocodile until you have crossed the river"