It’s Friday night and Emily Audsley and her housemates are heading home on the Northern Line, endorphins still racing through their bodies.
It’s been a classic house night out, in many ways — crowds of sweaty 20 and 30-somethings gathered under a railway arch near London Bridge, dance music blaring from several neon-lit sound systems, confetti cannons sending bright plumes of colour into the sky — but it won’t be a regular hangover they’re facing in the morning.
