I applied through college or university. The process took 4 months. I interviewed at NHS in May 2016
Interview
Process through university, then 'meet and greet' with team (but really it's a review process), then panel interview, interview with consultant, interview with a second consultant. The process is long, but enjoyable. Some of the questions asked came up during the different stages. Also questions asked on medical knowledge, a lot of it was basic stuff from first year and second year at university so it's a good idea to brush up on that. Ethical questions too.
Interview questions [1]
Question 1
Why this hospital? Why London? Why your chosen medical school? Do you know which direction you want to go in? Why that?