In 1942 the first team won through to the Irish Junior Cup, but were on the receiving end of a 4–0 defeat by Pembroke Wanderers II.
Two years later fortunes were reversed when Mossley won the Irish Junior Cup for the first time with a 3–0 win over Graiguenamanagh.
The first Senior trophy final was in the Kirk Cup in 1953–54, when defeat was suffered at the hands of Lisnagarvey by 2 goals to one after extra time.
In 1966 the Second team won the Irish Junior Cup with a 4–0 win over the Catholic Institute II, Limerick.
[3] The Anderson Cup was won by the First XI in 1966-67 and the following season promotion was gained to the top section of the Ulster Senior League.