It seems that some would like to believe that long serving manager = success however this is not necessarily the case.
I am not saying AP should go - far from it. All I have said is 10 games in, AP had a return of 9 points. If this return per game ratio continued then we would be relegated and his tenure would be under review. I cant see the board sitting back and accepting that so id expect some action in the NY 'if' our early season form continued.
in answer to your question - 10 longest serving managers are.....
Alex Ferguson Manchester United
Arsène Wenger Arsenal
John Coleman Accrington Stanley
David Moyes Everton
Steve Tilson Southend United
John Still Dagenham & Redbridge
Rafael Benítez Liverpool
Dave Jones Cardiff City
Paul Trollope Bristol Rovers
Gary Johnson Bristol City
Mixture of success and/or done nothing from the above.