My, haven’t they grown? In the several years (perhaps even a decade) since I last caught Placebo live, they’ve gone from being a scrawny three-piece with a somewhat thin sound – for much of the gig, I saw, they didn’t even have a bassist on stage – to become a properly equipped rock band with six on-stage members: here, on the first of two nights in south London, the band consisted of the regular trio, plus three side-persons on guitars, bass, keyboards and violin. They made quite a noise, blasting out satisfyingly slabby slices of sound.