These have been appearing in my lounge for the past few days. They congregate around 1 specific lamp opposite my chimney place and after I get rid of them, the following day loads reappear. First time I've ever seem these.
These are bean weevils (in the sub-family Bruchinae). I don't know what species they'd be (maybe in the genus Bruchus?). To my knowledge they're all pests of legumes. Maybe they're emerging from some stored lentils/peas/beans you have somewhere?