[1][2] Several teams from the Telford Combination, which also folded at the end of the 2011–12 season, also became members of the Mercian League and joined either Division One or Two.

Clubs such as Church Stretton, Rock Rovers, AFC Bridgnorth Reserves (Development) all left for the West Midlands Regional League Div 2.

Newport Town Reserves and Market Drayton Tigers joined Staffordshire County Div 2, with Ludlow Town Colts and Clee Hill United opting to join the Herefordshire league.

In these years the league also lost established members such as Hodnet, Shifnal and Childs Ercall due to them folding.

The league now just features one division of 11 teams, soon to become 10 due to Donnington folding midway through the 2018-19 season.