Going from the leaf it is a Polemonium paucifolium.
I had it a few years ago but didn't like where it was so died.

If your weeds are wildflowers then they are British natives especially if they are being queired by a snotty neighbour ;o)

Sorry to butt in but was so happy that SBG pointed out that so often native wildflowers are seen as weeds.

When you think about it many plants we grow are wildflowers in their native countries.

So many of ours are really pretty.

Thanks for that Seaburn, that's exactly what it is. For some reason, perhaps a knowledge buried somewhere in the depths, I had Jacob's Ladder in my mind, but knew it wasn't the usual one, so would never have worked it out myself. As for the weeds, I love wild flowers Merlinbaby and leave so many of them for the moths and butterflies. Red dead nettle, scarlet pimpernel (Anagallis arvensis), what we used to call Bird's eyes, the Speedwell (Veronica chamaedrys), Herb Robert (Geranium robertianum) as well as Lady's bedstraw, red Campion and a white one we used to call Soldier's Buttons which is a white low flowering hedgerow plant with lance like leaves - must look the name up. Ones that I do pull up are Nettles, apart from several beds on the field for the butterflies, white dead nettle (left as above) Docks and Thistles as well as the Burdock, 'cos you can have too much of a good thing!

I have this plant also Hsg. With me it is always an annual so it's much shorter & I think quite pretty. This year so many seedlings came up I had to despatch of some. Thank you for asking the name as I had forgotten also.

Honeysuckle, your wild flowers sound wonderful.

It's strange Feverfew that with you this plant acts as an annual, after all you are only one County up from me!

Thanks Merlin, I must take some photos while they are doing their thing, or before I weed that far!