Perolin Co
of Warwick, then of Upper Mill, Brimscombe near Stroud.
1915 The Perolin Co. of American, had British offices at Avenue Chambers, Hampton Bow, London. Advertised that over 25,000 boilers in USA and Canada (presumably implying that they had been treated)[1]
1916 The London Boiler Scaling Co advertise Perolin boiler treatment.
At some point was in Warwick; subsidiary: Orcene Co
1967 Advertised “within a 20-mile radius of Warwick and Leamington” to find room to expand their Victoria Street factory. The growth of the Perolin Group, which includes factories in London and Leeds, has been rapid, and the firm says that the need to expand....[2]. At the same time announced a decision "was taken very reluctantly after all attempts to find a larger factory in the area had failed." Presumably indicated the move to Stroud[3]
1967 Moved to Stroud