Bog Pimpernel (Anagalis tenella)

Don't see that one often British native I think, there's a selected form called Studland Variety. Have you seen the deep blue variety, called 'Arvensis it's a beauty brought back memories but really an annual in my garden.
Might be Perennial in yours !

This is readily available in nurseries up here Brian. I had this in the pond last year too but binned it as label said annual. The Cardamine came through winter so I might just leave this in the cold frame and see what happens.
Never seen a blue one. I'm hoping to get up to the nursery beside Scotsgran tomorrow, I will keep my eye out for one.