On Saturday I sat the ‘Life in the UK’ test, a requirement for foreign nationals who want to apply for citizenship or permanent leave to remain. My nearest test centre was in a dingy basement off the Essex Road. The fluorescent lights weren't doing very well. The invigilators were stone-faced, a bit rude. I'd been forbidden from talking to or looking at my fellow immigrants, about 20 people, mostly men. While waiting for the test to begin all I had to look at was the cover of my American passport.