Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3418
Mikel Arteta (Arsenal) 2149
Marco Silva (Fulham) 1592
Eddie Howe (Newcastle United) 1462
Unai Emery (Aston Villa) 1104
Andoni Iraola (Bournemouth) 874
Daniel Farke (Leeds United) 859
Longest current tenure in Championship
Manager Days
Phil Parkinson (Wrexham) 1592
Kieran McKenna (Ipswich Town) 1424
John Mousinho (Portsmouth) 1024
Nathan Jones (Charlton Athletic) 644
Chris Davies (Birmingham City) 521
Paul Heckingbottom (Preston North End) 446
Frank Lampard (Coventry City) 346
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1829
Dave Challinor (Stockport County) 1468
Richie Wellens (Leyton Orient) 1341
Johnnie Jackson (AFC Wimbledon) 1273
Gary Caldwell (Exeter City) 1112
Grant McCann (Doncaster Rovers) 912
Graham Alexander (Bradford City) 734
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 6016
Andy Woodman (Bromley FC) 1686
Dean Brennan (Barnet) 1511
Paul Cook (Chesterfield) 1368
Lee Bell (Crewe Alexandra) 1101
Mat Sadler (Walsall) 935
Micky Mellon (Oldham Athletic) 758

  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)