Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3176
Thomas Frank (Brentford) 2339
Mikel Arteta (Arsenal) 1907
Marco Silva (Fulham) 1350
Eddie Howe (Newcastle United) 1220
Kieran McKenna (Ipswich Town) 1182
Unai Emery (Aston Villa) 862
Longest current tenure in Championship
Manager Days
Michael Carrick (Middlesbrough) 870
John Mousinho (Portsmouth) 782
Daniel Farke (Leeds United) 617
Danny Röhl (Sheffield Wednesday) 516
Martí Cifuentes (Queens Park Rangers) 499
Liam Manning (Bristol City) 491
Chris Wilder (Sheffield United) 463
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1587
Phil Parkinson (Wrexham) 1350
Dave Challinor (Stockport County) 1226
Richie Wellens (Leyton Orient) 1099
Gary Caldwell (Exeter City) 870
Darren Ferguson (Peterborough United) 798
Michael Skubala (Lincoln City) 485
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5774
Andy Woodman (Bromley FC) 1444
Paul Cook (Chesterfield) 1126
Johnnie Jackson (AFC Wimbledon) 1031
Lee Bell (Crewe Alexandra) 859
Mat Sadler (Walsall) 693
Grant McCann (Doncaster Rovers) 670
  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)