Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3397
Mikel Arteta (Arsenal) 2128
Marco Silva (Fulham) 1571
Eddie Howe (Newcastle United) 1441
Unai Emery (Aston Villa) 1083
Andoni Iraola (Bournemouth) 853
Daniel Farke (Leeds United) 838
Longest current tenure in Championship
Manager Days
Phil Parkinson (Wrexham) 1571
Kieran McKenna (Ipswich Town) 1403
John Mousinho (Portsmouth) 1003
Nathan Jones (Charlton Athletic) 623
Chris Davies (Birmingham City) 500
Paul Heckingbottom (Preston North End) 425
Frank Lampard (Coventry City) 325
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1808
Dave Challinor (Stockport County) 1447
Richie Wellens (Leyton Orient) 1320
Johnnie Jackson (AFC Wimbledon) 1252
Gary Caldwell (Exeter City) 1091
Darren Ferguson (Peterborough United) 1019
Grant McCann (Doncaster Rovers) 891
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5995
Andy Woodman (Bromley FC) 1665
Dean Brennan (Barnet) 1490
Paul Cook (Chesterfield) 1347
Lee Bell (Crewe Alexandra) 1080
Mat Sadler (Walsall) 914
Micky Mellon (Oldham Athletic) 737

  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)