Hiya
I recently had one.
There were about 13 of us.
We got taken to a training room, and given pieces of paper and a pen. Then were asked to write our names on them and stick them so everyone could see. Then we were asked, in pairs, to discuss what we like about the high street and what we dislike. Then they stuck some board paper up and she asked us all to tell her what we liked/disliked. This went on for about half an hour.
Then we were given (individually) the word Customer Focus and were asked to write words for each letter.. for example.. C.. cheerful, U upbeat.. S .. etc... then we were split into two groups and given board paper to write CUSTOMER FOCUS on and choose the best words from the group to stick on it.. then we discussed that.
Then we were sent out onto the shop floor for 10-15 minutes to find 'wows' and 'repairs' - the wows were things that were good about the store.. and the repairs were things that were bad. We had to do 3 of each. And for the repairs, you had to write one, then put a solution to the repair.
Then it's an individual interview.. then you're free to leave
My advice:
Dress smart.
Lots of smiles and eye contact, don't talk over anyone and show you are listening (you are being watched whilst you work in a group)
In interview I was asked who were Debenhams main competitors. I said John Lewis/House of Fraser... (John Lewis is their biggest one)..
What would I say if I saw a customer shopping? I would ask what they were buying for, their budget, is it a gift, who is it for etc etc
Sounds daunting but it really wasn't - and I am always really nervous at interview !
Good luck!