In 2014–15 Bluebell United were Leinster Senior League champions, 27 years after winning their previous title.
In recent seasons the winners of the Senior Division have also been invited to play in the League of Ireland Cup.
The reserve teams of Shelbourne, Bohemians, Shamrock Rovers, St Patrick's Athletic, Brideville, Drumcondra and Dolphins have all been Senior Division champions in their own right.
The reserve teams of Cabinteely and UCD currently play in the lower levels of the Leinster Senior League.
Priestley also lists Bohemians, Britannia, Dublin University, Leinster Nomads, Phoenix and Montpelier as participants in the first season.
[4] However other sources suggest the league started a little later and was first played for in 1897–98 and that an unidentified British Army regimental team where the inaugural winners while Shelbourne were runners up.
Even when Bohemians and Shelbourne joined the Irish Football League in 1902 and 1904 respectively, their reserve teams continued to win titles regularly.
Initially only St James's Gate and British Army regimental teams challenged the Bohemians/Shelbourne duopoly.
The emergence of the League of Ireland thus created a number of vacancies in the Senior Division and among the clubs who filled them were Shamrock Rovers.
For the 1921–22 season Rovers were joined in the Senior Division by Bohemians B, St James's Gate B, Bray Unknowns, Midland Athletic, Pioneers, Brooklyn, Shelbourne United, Merrion, Glasnevin, CYMS and Richmond.
With a team that included John Joe Flood, William Glen, Bob Fullam and Dinny Doyle, Rovers won the Senior Division and reached the 1921–22 FAI Cup final.
Further vacancies in the Senior Division were now created and among the clubs who subsequently filled them were Brideville, Dolphins, Dundalk and Drumcondra.
During the late 1940s and 1950s the strongest team in the Leinster Senior League was St Patrick's Athletic.
The 1948–49 season would see St Pat's win a Leinster Senior League / FAI Intermediate Cup.
In 1950–51 a young Shay Gibbons helped St Pat's win the Leinster Senior League title for a fourth time.