The other day, I noticed that a new plant had taken up residence in our garden. I have no idea what it is. I don't even know whether it's a native species or something that's migrated from a neighbouring garden. As I was out in the garden clearing weeds, I thought I'd photograph it to see if any of you knowledgeable people can identify it. It's planted itself next to where we keep the wheelie bins, which is north facing and fairly shady, in case that helps. It seems quite attractive, so unless there's any good reason not to, I plan to keep it.
ETA: Thanks to puddleshark, it has been identfied as Tutsan (Hypericum androsaemum).