T D Scott, Crown Sulphur Works, Marshgate Lane, Stratford (1866 – 1886). Later, Johnson & Hooper, (1890 – 1906)

J Childs, West Ham Chemical Works, Canning Rd, West Ham (1866 –1882). Later, W C Bacon & Co, (1882 –1917)

Thos Bell & Co, Canning Rd, West Ham (1870 – 1882). Later, F W Berk & Co, (1886 – present day)

Squires & Chapman (founders), North Woolwich Rd, Silvertown. Became Spencer, Chapman & Messel (1872 – 1964)

Lawes Chemical Co, Creekmouth, Barking, Essex (1857 - )