Think you've got a bit of a mix there.

far left with the rounded leaves looks like an Aqualegia

Could the far right be creeping buttercup ?

Not sure if you have a bit of the weed variety of potentilla but could be young creeping buttercup

Yes the far left with the purple splash looks like aqelegia, not sure about the others though

I thought perhaps astrantia for the main clump, though it could equally be a hardy geranium leaf.

You might be right there Seaburn

My immediate thought was Astrantia too.

Thanks for your comments guys - helped a lot.