Ams, have a look at this:

https://www.barrgardens.co.uk/hardy-geraniums-for-shade

Hope that helps with your choice.

I have G macrorrhizum again pink and white forms. I have also had G renardii and both have done well for me in deep shade under the beech tree.

Thanks, can find lots of geraniums for full shade but not for dry shade. Think geranium Nodosum is good for both.

If you Google "Plants for 'shade" you will find several sites that specialise. I have found asking them very useful - usually keen to reply promptly and helpfully.And you can usually see illustrations of them as well. I've forgotten the exact name of the nursery I've used but that will find them. They have a huge selection of ferns too.

Just remembered - its Long Acre Plants.

Geranium Rozanne seems to flourish anywhere ...

Thanks everyone. All sorted now.