[3][4][5][6] External features of the church building include prominent Greek columns, casement windows, and a triple-doorway front access, with doors, by tradition, painted sky blue.

[24] Within a decade of consecration, in 1891, Hillhead Baptist Church had an established congregation exceeding 500 regular members, many of whom were commercially active and prosperous merchants.

[26] Early 20th century Daughter churches, where clergy and parishioners from Hillhead helped establish new centers of Christian worship, were started in Kelvinside, Port Dundas, and Partick, the latter at a cost of £5000 when it opened in the 1910s.

[27][28] At the outset of war, 120 male members of the congregation volunteered for military service, including most of the church's Sunday School teachers.

[29] As one example of losses early in the war, a church member who attended Fettes College, in Edinburgh, died at the Battle of Neuve Chappele in 1915.

[30] In 1916, Hillhead minister Dr John MacBeath noted the war had ‘made faith difficult’ and would herald significant political change.

[31] By the end of the war, Hillhead had lost fifty-five members from its congregation, the highest losses among Baptist churches in Scotland.

[36] The church played a prominent role in national Baptist Union meetings[37] and community organisations such as the YWCA.

[39] On the outbreak of World War Two, Hillhead Baptist Church leaders raised concerns at any weakness facing Germany's Nazi threat.

[44] Members of Hillhead Baptist Church facilitated contact between visiting New Zealand clergyman Lloyd Crawford and the American evangelist Billy Graham.

[48] During the 1970s, the Minister of Hillhead Baptist Church raised concerns about congregation declines across Scotland[49][50] while encouraging social engagement and charity work.

The church held registered charity status with the Scottish Council for Voluntary Organisations (number SC012806,[54] and participated in various community events.