Does anyone have any idea what this plant/weed is? It appeared a few months ago - I thought it was a weed (I didn't plant it!) so I pulled it up but it has reappeared.
Possibly a Hypericum judging by the leaves.
Thanks very much for this. I'm glad it's a plant and not a weed as it looks quite pretty (though a quick google suggests it self-seeds readily which I guess is how it turned up in my garden!). Anyhow, thanks so much for the information.
Hypericum androsaemum, "Tutsan". If you pull off some of the leaves and let them dry they smell curry like. British native, pretty in flower and useful for a shady spot. Look up its medicinal and other uses.