Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3275
Mikel Arteta (Arsenal) 2006
Marco Silva (Fulham) 1449
Eddie Howe (Newcastle United) 1319
Kieran McKenna (Ipswich Town) 1281
Unai Emery (Aston Villa) 961
Andoni Iraola (Bournemouth) 731
Longest current tenure in Championship
Manager Days
John Mousinho (Portsmouth) 881
Daniel Farke (Leeds United) 716
Danny Röhl (Sheffield Wednesday) 615
Martí Cifuentes (Queens Park Rangers) 598
Régis Le Bris (Sunderland) 353
Scott Parker (Burnley) 349
Paul Heckingbottom (Preston North End) 303
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1686
Phil Parkinson (Wrexham) 1449
Dave Challinor (Stockport County) 1325
Richie Wellens (Leyton Orient) 1198
Gary Caldwell (Exeter City) 969
Darren Ferguson (Peterborough United) 897
Michael Skubala (Lincoln City) 584
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5873
Andy Woodman (Bromley FC) 1543
Paul Cook (Chesterfield) 1225
Johnnie Jackson (AFC Wimbledon) 1130
Lee Bell (Crewe Alexandra) 958
Mat Sadler (Walsall) 792
Grant McCann (Doncaster Rovers) 769
  The longest managerial reign of all time in the English football league belongs to Fred Everiss, who was manager of West Bromwich Albion for over 45 years (from 1902 to 1948)