SK 3391 07 April 2022: 4 very high res. images.
Habit : Cultivated
Very common in UK as an edging plant.
There are many named cultivars ..the flowers can be white, lilac or deep purple.
Aubrieta deltoidea (L.) DC. ??
Maybe as per images at Aubrieta deltoidea
Leaves seems to be a bit variable.
Aubrieta deltoidea ……. It would be wrong to guess…which is why I took it no further.
Impossible to say which Aubretia.
In UK there are a few sp and many named hybrids/cultivars.
Please see Royal Horticultural Society …RHS list below ….293 are grown here.