London entered the National Football League in 1993 and was initially fairly successful with two wins, two draws and two losses in the county's first campaign.

In June 2011, Mayo defeated London after extra-time in the Connacht SFC, London entered the first qualifying round and defeated Fermanagh by a scoreline of 0–15 to 0–9 in Ruislip in the first round of the 2011 All-Ireland SFC qualifiers, recording its first championship win for 34 years.

In 2013, the GAA banned the county from travelling to Ireland for warm-up games, as a result of a GAA rule put in place to prevent Ireland-based teams travelling abroad for training camps in the run up to the championship, putting London at a major disadvantage to other counties.

[3][4][5] The day after the team defeated Sligo was a bank holiday in England, so the players rested.

After these three games the team headed for the Connacht SFC final — a first appearance at that level — but lost to Mayo.

The county won its opening three fixtures of the 2022 National Football League and topped Division 4 after those three wins, over Carlow, Waterford and Leitrim.

[16][17] Then Leitrim narrowly defeated London in a 2022 Connacht SFC quarter-final at Ruislip, with London scoring two goals to go within a point of the visitors as the game neared its conclusion, and then Leitrim responded with a late goal to secure a four-point victory.

2024: played in FBD 2024 for the first time in 15 years, beat Mayo, lost to Roscommon, a one-sided defeat to Galway in the Connacht SFC.

2025 will be the 50th anniversary year of London in the Connacht SFC after being postponed in 2020 due to Covid-19 their game against Roscommon is rescheduled to take place.

Team as per London vs Louth in the All-Ireland SFC 1st round qualifier, Sunday 10 June[when?]

In October 2019, London-born Michael Maher became the first native to take charge of the London county football team.