Following on from this the league suffered from a lack of clubs, with only seven clubs completing the 2018–19 season, and ten, including two reserve sides making up the league for the 2019–20 season.

For the 2022-23 season, the league changed to just a Premier Division, sponsored by RTM Brickwork.

The following clubs are competing in the Merthyr & District League during the 2024–25 season.

[1] Promotion from the Premier Division is possible to the South Wales Alliance League with the champion of the league playing the other Tier 7 champions from the South Wales regional leagues via play-off games to determine promotion.

This article about a Welsh association football competition is a stub.