The good thing about stores like Asda is that there is a job for everybody. Students can work part-time on the checkouts, while somebody looking for a full-time position with higher pay can apply to be a section leader, team leader or even manager.
With jobs like this, you need good communication skills and good customer service skills. You are representing Asda as one of their employees, and they need to know that you are going to do the company justice. Make sure you come across as friendly in the interview, and you’ll have a much better chance of getting the job.