Waitrose interview questions

I filled in the application for my first part time job, sent it off and had a phone call about a week or so later asking me to come in for a group interview at a recruitment agency (it was for a brand new store so wasn't finished yet would normally be held instore). Went to the group interview from what I can remember there were about 10 other people, we had to do a short introduction of ourselves, what we did, and what was our greatest achievement. We then had to split up into pairs and try and do a sales pitch for a product. I got called back for a one on one interview which was just to discuss what area of the shop I might want to work, and what kind of hours I could work etc. I got the job and worked within two different Waitrose stores over a 4 year period. All I would say is to speak up and stand out as with any interview if you don't make an impression you wont be noticed.

2 hour group interview, group discusion, selling task, communication round