I applied online. The process took 3+ months. I interviewed at Lidl (Newcastle upon Tyne, England) in Jan 2017
Interview
Online application, save your application as they ask you questions about it.
Online test, fairly easy and simple.
Telephone interview - basic questions about motivations, experience and why Lidl?
6 week wait after telephone interview.
Assessment Centre - 2 easy 20 minute group tasks - they want to see leadership skills. Then a 30 minute interview with 2 managers - basic experience and skills questions.
Final stage interview with a senior director.