Does anyone have a name for this plant?

[IzzyGee]

It grows as a weed in old walls near me in Scotland. I have taken some cuttings to see if I can get my own plants. If it can grow in such a hostile environment I thought it might manage my garden.

No idea but it's very pretty

Go back and try to get some seeds. It is pretty.

Looks like red valerian

Thank you Pigeon I think you’re correct. Unfortunately Wikipedia says it smells rank......

I have a large clump of it in my garden, and have never noticed a smell.

Valerian (aka sleepy) tea does smell a bit dubious.

Red valerian, Centranthus ruber. Never noticed a smell!

Not to be confused with Valerian, Valeriana officinalis, which is what the tea is made from.