Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3241
Thomas Frank (Brentford) 2404
Mikel Arteta (Arsenal) 1972
Marco Silva (Fulham) 1415
Eddie Howe (Newcastle United) 1285
Kieran McKenna (Ipswich Town) 1247
Unai Emery (Aston Villa) 927
Longest current tenure in Championship
Manager Days
Michael Carrick (Middlesbrough) 935
John Mousinho (Portsmouth) 847
Daniel Farke (Leeds United) 682
Danny Röhl (Sheffield Wednesday) 581
Martí Cifuentes (Queens Park Rangers) 564
Liam Manning (Bristol City) 556
Chris Wilder (Sheffield United) 528
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1652
Phil Parkinson (Wrexham) 1415
Dave Challinor (Stockport County) 1291
Richie Wellens (Leyton Orient) 1164
Gary Caldwell (Exeter City) 935
Darren Ferguson (Peterborough United) 863
Michael Skubala (Lincoln City) 550
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5839
Andy Woodman (Bromley FC) 1509
Paul Cook (Chesterfield) 1191
Johnnie Jackson (AFC Wimbledon) 1096
Lee Bell (Crewe Alexandra) 924
Mat Sadler (Walsall) 758
Grant McCann (Doncaster Rovers) 735
  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)