(Original post by HarryA)
Find the Sainsbury's you're going to and memorise things. For my interview, I memorised this:
287 parking spaces
9 disabled parking spaces
6 parent and child parking spaces
Monday 0700 - 2200
Tuesday 0700 - 2200
Wednesday 0700 - 2200
Thursday 0700 - 2200
Friday 0700 - 2200
Saturday 0700 - 2200
Sunday 1000 - 1600
Also, go in store and memorise the aisles and what they sell. Eg, the first thing you see when you walk in to EVERY big supermarket is fruit and veg. In my Sainsbury's aisles 1 and 2 have meat, aisle 3 has dairy like cheese and butter, aisle 4 has yogurt on one side and home design products on the other; etc etc.
Memorise things like that and profits and you're on your way.
Make sure you know the role you're applying for. I went in to the interview thinking it was for checkouts when it was actually for counters. Luckily, the question about the specific role didn't come up!
So find out about the role too.