I applied online by doing a basic questionnaire. I got a call back a few days later inviting me to do an interview. The interview was in a group setting with about 10 other candidates. Extremely easy interview with group activities (e.g. drawing posters etc). They basically wanted to see if you were able to work in a group. At the end they made you pick a random word out of a hat and talk about it (e.g. popcorn, nachos) for a minute.

Applied on their careers website, got an email around a week later and was invited for a group interview few days after. Group Interview stage had two managers, a supervisor and one team member looking over us. There was around 20 of us (i think they had 3 groups of 20 on different days), each of us had to pick a word out of a hat and talk about it (the words were related to cinema). I got the word 'romantic films' so i just waffled on about that. It doesn't really matter what you say, they just want to see your personality. We then had to do a task in our groups of 5, had to make up a story using only certain words they gave you (they gave us 50 words) and had to read it out. They just see how to work together as a team here. We were then given a booklet on stuff about your experience and why you'd work there, at the end there were like 20 maths questions based on retail. For example, if popcorn is £4.00, and someone gets 25% off, how much would it be? Questions like that and you aren't allowed to use a calculator. That was the end, i got home and got a call saying i got through to the 1-1 interview stage. Got told i'm hired during that interview and few days after, met with the others who were hired too :)