Unknown purple flowering plant

Unknown purple flowering plant

Observation - Unknown purple flowering plant - UK and Ireland. Description: The foliage seemed hairy when the plant was initially growing but now it's flowered there are only a few hairs which can be seen where the dark spots are on the leaves. i left it growing as had (& have) no idea what it is... any ideas?

The foliage seemed hairy when the plant was initially growing but now it's flowered there are only a few hairs which can be seen where the dark spots are on the leaves. i left it growing as had (& have) no idea what it is... any ideas?