Delicate blue/purple flower

Hi All

This little flower has been popping up in the last couple of weeks, mainly on the edge of the patio, also invited itself into the odd tub or container. Have had a (admittedly brief) look on a wildflower site but can't see anything quite like it. The flower itself is about an inch in diameter. Any ideas?

Cheers.

 

It's a Linum, possibly L.perenne.

 

Thanks Longy! I really like it.