I have been working at Civil Service United Kingdom full-time
Clear pay structure, defined hierarchy, good benefits.
Inept dealing with staff who bully or act aggressively with other staff
I applied online. The process took 3 weeks. I interviewed at Civil Service United Kingdom (Telephone, TX) in December 2014.
Online tests (verbal, numerical, situational judgement), competency questionnaire, telephone interview.
The latter two look for the core Civil Service competencies as listed on the website.
Mostly quite basic - nothing too unexpected or difficult. Practice tests are provided before taking the actual tests, competency questionnaire is quite clear and easily answered, and interview topics are given before hand.