There were a number of amalgamations and buyouts by mills and companies until by 1974 the group, under the name of Gartside Group, consisted of the following companies and mills; Shiloh Spinning Company Ltd incorporated in 1874 and reconstituted as Shiloh Mills Ltd in 1920 ran Shiloh No.1 mill built in 1874, No.1a mill built in 1888, No.2 mill built in 1899 and Elk mill built in 1926; Park Mill (Royton) Ltd incorporated in 1904 and reconstituted in 1918 ran Larch mill (formerly Highfield and Park No.1 mill) built in 1872 and Park No.2 mill built in 1912; Roy Mill Ltd incorporated in 1905 and reconstituted as Roy Mill (1919) Ltd in 1919 ran Roy mill built in 1905; Royton Spinning Co Ltd incorporated in 1871 ran Royton Spinning No.1 mill built in 1871 and Royton Spinning No.2 mill built in 1882. These four companies amalgamated in 1953 to form Shiloh Spinners Ltd.

Other mills in the group included Park & Sandy Lane Mills Company Ltd incorporated in 1875 ran Park & Sandy Lane No.1 mill built about 1850 and Sandy (Park & Sandy Lane No.2) mill built in 1912; Holly Mill Co Ltd incorporated in 1890 and reconstituted as Holly Mill Ltd in 1920 ran Holly mill built in 1890; Vine Mill Co (Royton) Ltd incorporated in 1897 and reconstituted as Vine Mill (Royton) Ltd in 1920 ran Vine mill built in 1897; Grape Mill Co Ltd incorporated in 1905 and reconstituted as Grape Mill Ltd in 1925 ran Grape mill built in 1905.