I think you get great experience working within your role but find it very difficult to get the opportunity to move around other departments / area's.
I general though I class Waitrose as a great place to work.
Answered - Business Analyst, Financial Performance (Current Employee) - Bracknell
Time and a 1/3 what you would get if you were working days
Same as dayshift workers. Pay is determined by your performance and your Appraisal/Pay Review.