I applied through an employee referral. The process took 3 months. I interviewed at Keolis Amey Metrolink (Manchester, England)
Interview
Interview depends on the supervisor conducting it. If you have a reference from inside the company it helps a lot. Relatively straight forward questions. Psychometric tests take a day to complete, but they aren't overly difficult.
Interview questions [1]
Question 1
How do you feel about working some shifts from 4:30am, and others finishing at 2:30am?