I applied through university. The process took 2 months. I interviewed at GSK (London, England) in June 2018
Interview
Interviewed by two managers, both friendly and encouraging. After a few general questions about myself, interviewers used STAR format for all subsequent questions. 45min interview, 11 questions. Very nervous but they made it easy by prompting when I got a bit off track. Prior to the interview, I had to complete several online tests incl. aptitude, numerical and verbal tests.