They are currently members of the Essex Olympian League Premier Division and play at the Len Forge Centre.

In 1968, Catholic United adopted green and white hoops after requesting a set of kits from Scottish club Celtic.

[1] Ahead of the 2009–10 season, the club joined the Essex Olympian League from the Southend Borough Combination.

Between 2014–15 and 2016–17, Catholic United achieved three consecutive promotions in the Essex Olympian League system, winning the Premier Division in their debut season in 2017–18.

[3] In 2020, after groundsharing with Bowers & Pitsea at the Len Salmon Stadium, Catholic United moved to the Len Forge Centre, at Eastwoodbury Lane in Southend-on-Sea.