Look like campanula.

Yes Campanula..Your lucky Hank, I get Valarian in my g'house, the roots have grown under the concrete, I've tried every trick in the book to get rid but nope they are tough and pop up every springtime on the inside..

Thanks, have just looked them up and gather I can move them and transfer them elsewhere. Is it really that easy ?

yes it is, as long as you have some roots and keep it well watered til it is settled in. they self seed freely too.

I noticed when i visited weston super mare i noticed campanula was growing wild in most of the walls of the town.