Number 1:
1857 : Perkin and Sons Dye works.
Number 2:
1860 : Holliday Dyes and Chemicals Ltd.
began the manufacture of dye Magenta.
Number 3:
1863 : The Atlas Works, were the pioneers of synthetic dyes of the Magenta family of dyes.
Number 4:
1872 : Irvinebank Dyeworks Limited.
Number 5:
1876 : The Clayton Aniline Company Ltd.