I’m convinced that Ladytron are robots. Maybe it’s the jerky movements, the mechanised synths, or their Blade Runner pop songs, but such is Ladytron’s mechanised sleakness that you wouldn’t be surprised if their razor-sharp cheek bones hid a multitude of circuit boards, batteries and wires. Android or not, the band’s cult following and critical acclaim clearly aren’t accidents: under their waves of throbbing, gloomy bass, and glitchy synths are a clutch of resilient pop-songs which have seen them open for Bjork and Nine Inch Nail on previous tours. They might love slathering everything in bleak, futuristic noise, but make no mistake: Ghosts and Runaway - both from new album Velocifero - are as catchy as winter colds at a bus-stop. By the time they got around to treating the Academy to International Dateline, Ladytron looked dangerously close to loosening up, and for a few minutes their icy façade slipped. As singers Mira Aroyo and Helen Marnie unglued their feet from the stage and began to dance, Daniel Hunt and Reuben Wu cranked the electronics up to 11, spitting processed drum-beats into the crowd. Suddenly, Ladytron weren’t electro-androids sent from the future, but just a couple of Scouse DJs and two achingly cool girls who dig Paul Numan, tearing through a greatest hits set. With great relief the Academy shrugged its collective shoulders, finished off its drinks and made a decent stab at gyrating like it was 1986. Justice, Klaxons and Friendly Fires have all reignited Britain’s love for twisted indie-dance, but Ladytron shouldn’t be too worried. Four albums in, the band have a battery of glittering songs to deploy and, as Sheffield saw first hand, they are still at the very top of the electro tree.