Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3228
Thomas Frank (Brentford) 2391
Mikel Arteta (Arsenal) 1959
Marco Silva (Fulham) 1402
Eddie Howe (Newcastle United) 1272
Kieran McKenna (Ipswich Town) 1234
Unai Emery (Aston Villa) 914
Longest current tenure in Championship
Manager Days
Michael Carrick (Middlesbrough) 922
John Mousinho (Portsmouth) 834
Daniel Farke (Leeds United) 669
Danny Röhl (Sheffield Wednesday) 568
Martí Cifuentes (Queens Park Rangers) 551
Liam Manning (Bristol City) 543
Chris Wilder (Sheffield United) 515
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1639
Phil Parkinson (Wrexham) 1402
Dave Challinor (Stockport County) 1278
Richie Wellens (Leyton Orient) 1151
Gary Caldwell (Exeter City) 922
Darren Ferguson (Peterborough United) 850
Michael Skubala (Lincoln City) 537
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5826
Andy Woodman (Bromley FC) 1496
Paul Cook (Chesterfield) 1178
Johnnie Jackson (AFC Wimbledon) 1083
Lee Bell (Crewe Alexandra) 911
Mat Sadler (Walsall) 745
Grant McCann (Doncaster Rovers) 722
  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)