Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3258
Thomas Frank (Brentford) 2421
Mikel Arteta (Arsenal) 1989
Marco Silva (Fulham) 1432
Eddie Howe (Newcastle United) 1302
Kieran McKenna (Ipswich Town) 1264
Unai Emery (Aston Villa) 944
Longest current tenure in Championship
Manager Days
Michael Carrick (Middlesbrough) 952
John Mousinho (Portsmouth) 864
Daniel Farke (Leeds United) 699
Danny Röhl (Sheffield Wednesday) 598
Martí Cifuentes (Queens Park Rangers) 581
Liam Manning (Bristol City) 573
Chris Wilder (Sheffield United) 545
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1669
Phil Parkinson (Wrexham) 1432
Dave Challinor (Stockport County) 1308
Richie Wellens (Leyton Orient) 1181
Gary Caldwell (Exeter City) 952
Darren Ferguson (Peterborough United) 880
Michael Skubala (Lincoln City) 567
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5856
Andy Woodman (Bromley FC) 1526
Paul Cook (Chesterfield) 1208
Johnnie Jackson (AFC Wimbledon) 1113
Lee Bell (Crewe Alexandra) 941
Mat Sadler (Walsall) 775
Grant McCann (Doncaster Rovers) 752
  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)