I applied through an employee referral. The process took 1 day. I interviewed at President Kennedy School (Coventry, England) in Dec 2015
Interview
You will need to teach an observed lesson. Followed by an interview with a member of the SLT and your head of department. They are looking for evidence of progress of all pupils within the lesson. As long as you can achieve this, they don't care about the approach you take.
Interview questions [1]
Question 1
Tell us about a time when a lesson did not go well.