I applied online. The process took 2 months. I interviewed at GSK (Newcastle upon Tyne, England) in Nov 2014
Interview
Online application and one interview.
Extremely chemistry based interview based mainly around mechanisms. Some competency questions, though these appeared more a formality.
Best thing prior is to revise lots of mechanisms.
Also make sure you have the standard competency questions nailed.
Interview questions [1]
Question 1
Please draw these mechanisms for this reaction scheme.