Reminds me of one of the Nightshades.

Enchanters Nightshade ? In loose soil this pulls out very and also spreads like fury. I seem to remember the roots are white - pull it out and see.

its not enchanters nightshade which is a blessing . It has very small seeds that drop.

I think it is a common figwort Scrophularia nodusum. The leaves are right and the arrangement of what were the flower stalks too. A nice British native , wish I had it growing in my garden.

That is what it is indeed. Should have recognised it, getting old.

Thanks everyone - glad I didn’t pull it out.

Well its bigger than the ones I know are Enchanters Nightshade! Scrofularia sounds like a nasty disease doesn't it? (PS Guess what, I just found one in a flower bed! Why do you wish you had some Eileen? I was going to pull it out)