What's happened to English refs?

Over the last couple of seasons I have been coining it in by betting on red cards. You get 90minutes of interest and if one goes in either team you are well in profit, if one goes in both teams happy days. The English leagues were superb for this and very profitable. The refs were excellent for red card betting as they would book you for looking like you might be thinking of saying something (unless you play for Man U or Chelsea). This season they seem to be the opposite, I think it would take a full blown assault to get a red card just now. I've hardly seen a booking let alone a red card. I think I'll give this sort of bet a break for a while until normal service is resumed.