Blundell and Co

of Limehouse
1866 Messrs Blundell of the London Copper Works, Limehouse, and Tidal Basin, Victoria Docks had purchased the patent and rights to Downton's pump[1]
1870 Presumably T. Blundell and Sons
1877 Blundell Brothers were makers of pumps; the Waterwitch was claimed to be an improvement on the Downton pump
1880 Waterwitch Pump made by Blundell Brothers of West India Dock Road, Limehouse, exhibited at the Agricultural Hall.[2]
1882 Waterwitch Pump. See illustration.
1888 Acquired by Blundell's London Copper and Brass Works