Answers to 3 plant questions please.

First photo: Veronica gentianoides. A pretty spring flower which gradually dies away to reappear the following spring in May. It will spread gradually. Mine is pale blue.
Second photo: not sure but looks a bit like a delphinium. Wait to see if it flowers.
Third photo: I always leave my seed heads on Anemone Blanda and they naturalize quickly.

Thanks very much Arbuthnot ... that's very helpful ...
I hope the Sunday weather is being kind to you in Buckinghamshire ...
... we'll see if we get more answers on 2 and 3. Do you leave the flower heads on your Veronica gentianoides please ?

Mostly I cut them off but I don't think it hurts to leave them.

Okay... thank you Arbuthnot.

#2 looks like the leaves of an eryngium to me

Thanks Moongrower .. I'll search for that and compare.

Hi Tt, I'm voting for Delphinium for #2, Derek.

Thanks Derek... I'll photograph #2 plant again when it has grown larger.

I don't think No.2 is Delphinium, it doesn't look like the leaves of mine. I think its a weed.