About 5 different companies plus what works for club direct, when I worked for Showsec jobs are listed and you only pick what you want so very rare you'll get staff who aren't in management structure working all 19
Don’t get me wrong, most of the stewards outside the ground are very nice. They are pleasant, ask you nicely to be checked, and they do a fast check. Unfortunately there are some stewards who are totally OTT when it comes to to checking, and go beyond what they are entitled to do by law.
If I manhandled a customer where I work, even touching them innocently, I could get into trouble.