Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3248
Thomas Frank (Brentford) 2411
Mikel Arteta (Arsenal) 1979
Marco Silva (Fulham) 1422
Eddie Howe (Newcastle United) 1292
Kieran McKenna (Ipswich Town) 1254
Unai Emery (Aston Villa) 934
Longest current tenure in Championship
Manager Days
Michael Carrick (Middlesbrough) 942
John Mousinho (Portsmouth) 854
Daniel Farke (Leeds United) 689
Danny Röhl (Sheffield Wednesday) 588
Martí Cifuentes (Queens Park Rangers) 571
Liam Manning (Bristol City) 563
Chris Wilder (Sheffield United) 535
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1659
Phil Parkinson (Wrexham) 1422
Dave Challinor (Stockport County) 1298
Richie Wellens (Leyton Orient) 1171
Gary Caldwell (Exeter City) 942
Darren Ferguson (Peterborough United) 870
Michael Skubala (Lincoln City) 557
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5846
Andy Woodman (Bromley FC) 1516
Paul Cook (Chesterfield) 1198
Johnnie Jackson (AFC Wimbledon) 1103
Lee Bell (Crewe Alexandra) 931
Mat Sadler (Walsall) 765
Grant McCann (Doncaster Rovers) 742
  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)