Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3142
Thomas Frank (Brentford) 2305
Mikel Arteta (Arsenal) 1873
Marco Silva (Fulham) 1316
Eddie Howe (Newcastle United) 1186
Kieran McKenna (Ipswich Town) 1148
Unai Emery (Aston Villa) 828
Longest current tenure in Championship
Manager Days
Paul Warne (Derby County) 868
Michael Carrick (Middlesbrough) 836
John Mousinho (Portsmouth) 748
Daniel Farke (Leeds United) 583
Danny Röhl (Sheffield Wednesday) 482
Martí Cifuentes (Queens Park Rangers) 465
Liam Manning (Bristol City) 457
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1553
Phil Parkinson (Wrexham) 1316
Dave Challinor (Stockport County) 1192
Richie Wellens (Leyton Orient) 1065
Gary Caldwell (Exeter City) 836
Darren Ferguson (Peterborough United) 764
Shaun Maloney (Wigan Athletic) 740
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5740
Andy Woodman (Bromley FC) 1410
Paul Cook (Chesterfield) 1092
Johnnie Jackson (AFC Wimbledon) 997
Lee Bell (Crewe Alexandra) 825
Mat Sadler (Walsall) 659
Grant McCann (Doncaster Rovers) 636
  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)