Go abroad and the list gets even longer.
The average managerial job lasts about 16 months. The teams that rarely change managers are usually the ones that win trophies regularly. Or Woolwich who just don't like changing managers for some reason.
Simon Jordan mentioned on a talksport clip earlier: "If Daniel Levy wanted the cheap option, he'd just keep the same manager"
That's basically Woolwich. They never sign a player when they need to, and have been content not winning the league for over 20 years now.