The man who spoke to me on the phone from Morton Hall detention centre in Lincolnshire asked me not to use his name. ‘At 10.30,’ he said, ‘they put us on a bus and took us to a private airfield in Doncaster although they were fighting for our case outside. I see police. I see dogs. It was like hell. We were watching other detainees going inside the plane. We were shaking, thinking any moment it’s going to be us.’