Jasione

Most definately Marguerite :)))
It's the most gorgeous colour and dead heading and trimming back makes it more prolific :)))

This is lovely too Louise, another I 've never seen before, is it a perennial?

It is Simbad.
I learned about it on a Gardeners World episode a couple of years ago now i think and when i saw it shortly after in the local garden centre i pounced on them !

They had them there again this year too, so i think they must be easy to find :)