A pleasant and well-organised day, and I felt that the interviewers were considerate and attentive. Although I didn't get an offer, I thought the process was rigorous and fair. One point to note, they didn't offer to cover any of our expenses, but only invited us 10 days in advance to their office in London. Many candidates had to stay overnight as the day started so early, and accommodation prices were very high so close to the time. Given that their office shares a site with a budget hotel, you would think they would be able to negotiate a corporate rate for instances such as this.
I applied online. The process took 3 weeks. I interviewed at Lidl in Nov 2015
Interview
CV and cover letter submitted online, followed by a numerical test and telephone interview. I was invited to an assessment centre but did not attend. Communication from the recruiters was prompt with clear instructions.
Online test (I think around 4 different stages, all the usual stuff), online interview (6 questions each given only one minute to prepare and then 5 minutes to answer), then assessment centre.
Online application, online test, recorded video interview, maths test, assessment centre which involves a presentation and interview. The recruitment team is very helpful, especially on the day of the assessment centre.