Looks like it might be alkanet with beautiful blue flowers it is a native wildflower if it is but it can be a nuisance in a garden.

Its not an Invader as i first thought it's one of those plants that i sprinkled the seeds out as it's an annual and it hasn't come up in its first year so i forgotten about it thrown the packet away and forgotten about it only for it germinate in its second year i think its a silene/Dianthus it has paleish pink flowers

I'm out of touch i call alkanet an anchusa

depending on which one it is it is in the genus Anchusa. I'd like to know what it is when it finally flowers.

I have green alkanet in the garden. The flowers are a glorious blue, so I only pull it out if it’s really in the wrong place. It spreads very quickly, and can be a bit unruly. I find the hairs can be a bit stingy, but it doesn’t last.

Maybe primula? got a feeling about it maybe my brain has breifly flickered into life.

these appear to have 4 petals per flower. Dianthus and Silene usually have 5 or based on 5's.
the colour looks pinky and the flower form reminds me of a Veronica or even the larger willowherbs.
was the seed for a garden plant or a wildflower?

I would say garden plant it's an oddity from a well known plant family if i remember correctly maybe Chiltern seeds