Lord Mawhinney is to stand down as Football League chairman in March next year.
The former Conservative Party chairman will by then have held the post for more than seven years, having taken the reins in January 2003.
As well as the League's re-branding in 2004, Lord Mawhinney has overseen the introduction of the fit and proper persons test for prospective club directors and the publication of spending on agents' fees.
He said: "It has been a privilege to serve the Football League. I have greatly enjoyed the challenge of helping to shape a better League and I am grateful for all the support that I have received.
"This timetable will give my successor the opportunity to develop League policy for the 2010/11 season."
Lord Mawhinney became MP for Peterborough in 1979 and later held the seat of North West Cambridgeshire until 2005. He has also served as Secretary of State for Transport and Minister for Health, among several roles in government.
League clubs will be consulted in the process to appoint his replacement, which will be overseen by his fellow independent director Ian Ritchie.
Newcastle United fans: Stop messing with the legacy of Wor JackieEXCLUSIVE: 2018 World Cup crisis summit called as Caborn faces axeManchester United boss Sir Alex Ferguson hit with four-match ban for 'grossly improper' criticism of Alan Wiley
Explore more:Organisations:Football League, Conservative Party