No idea of it's name but I liked it...

I'm sure I know this but can't think what is it at the moment.

Virginia stock I think ...

Now you remind me, it does look like the night scented stocks I've grown before, good one!

None of them are actually wild flowers. They are garden annuals. You can save the seeds and sow them again next year.

That's why I've been putting 'wildflower seeds' in parentheses. They're still quite nice though?
My ideal is to get stuff this nice to naturalise without too much help in my overgrown grass. Failed the first year but I think I'm getting closer to having an urban meadow in my teeny garden this year. More photos to follow

Good luck !