I applied online. The process took 4 weeks. I interviewed at Driver and Vehicle Licensing Agency (Swansea, Wales) in Dec 2019
Interview
Security check, waiting with other applicants, interview, telephone test, ID check. Overall process around 3 hours. Was told at the start they were interviewing around 800 applicants for 100 positions, and then at the end of the process it was clarified that there weren't any actual jobs and the 100 successful applicants would be put on a waiting list for any future jobs.