Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3328
Mikel Arteta (Arsenal) 2059
Marco Silva (Fulham) 1502
Eddie Howe (Newcastle United) 1372
Unai Emery (Aston Villa) 1014
Andoni Iraola (Bournemouth) 784
Daniel Farke (Leeds United) 769
Longest current tenure in Championship
Manager Days
Phil Parkinson (Wrexham) 1502
Kieran McKenna (Ipswich Town) 1334
John Mousinho (Portsmouth) 934
Nathan Jones (Charlton Athletic) 554
Chris Davies (Birmingham City) 431
Paul Heckingbottom (Preston North End) 356
Frank Lampard (Coventry City) 256
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1739
Dave Challinor (Stockport County) 1378
Richie Wellens (Leyton Orient) 1251
Johnnie Jackson (AFC Wimbledon) 1183
Gary Caldwell (Exeter City) 1022
Darren Ferguson (Peterborough United) 950
Grant McCann (Doncaster Rovers) 822
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5926
Andy Woodman (Bromley FC) 1596
Dean Brennan (Barnet) 1421
Paul Cook (Chesterfield) 1278
Lee Bell (Crewe Alexandra) 1011
Mat Sadler (Walsall) 845
Micky Mellon (Oldham Athletic) 668
  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)