With the local Catholic population growing a larger space was needed to accommodate the increasing congregation.

On 19 December 1819, Assembly Rooms at the Green Dragon Inn were hired as a place to celebrate a Catholic Mass.

In 1909, stained glasses windows made by Hardman & Co. was installed in the church.

Some of the reordering of the church done in the 1960s was undone in the 1970s, by the priest Fr Peter Taylor.

[5] From St Mary's Church, other missions were started to serve other parts of Walsall.

From 1958 to 1960, St Thomas of Canterbury Church was built in Coal Pool.