Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3220
Thomas Frank (Brentford) 2383
Mikel Arteta (Arsenal) 1951
Marco Silva (Fulham) 1394
Eddie Howe (Newcastle United) 1264
Kieran McKenna (Ipswich Town) 1226
Unai Emery (Aston Villa) 906
Longest current tenure in Championship
Manager Days
Michael Carrick (Middlesbrough) 914
John Mousinho (Portsmouth) 826
Daniel Farke (Leeds United) 661
Danny Röhl (Sheffield Wednesday) 560
Martí Cifuentes (Queens Park Rangers) 543
Liam Manning (Bristol City) 535
Chris Wilder (Sheffield United) 507
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1631
Phil Parkinson (Wrexham) 1394
Dave Challinor (Stockport County) 1270
Richie Wellens (Leyton Orient) 1143
Gary Caldwell (Exeter City) 914
Darren Ferguson (Peterborough United) 842
Michael Skubala (Lincoln City) 529
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5818
Andy Woodman (Bromley FC) 1488
Paul Cook (Chesterfield) 1170
Johnnie Jackson (AFC Wimbledon) 1075
Lee Bell (Crewe Alexandra) 903
Mat Sadler (Walsall) 737
Grant McCann (Doncaster Rovers) 714
  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)