Alexander Simpson, his second son, joined the business aged 15 in 1917, and by 1929 had planned and opened a larger factory in Stoke Newington where production could be centralised, this again had to be enlarged a few years later.
Alexander Simpson, hans anden søn, startede i firmaet i 1917, da han var 15 år, og i 1929 havde han planlagt og åbnet en større fabrik i Stoke Newington, hvor produktionen kunne blive centraliseret.