IAWS purchased two small feed trading businesses between 1988 and 1989 called Unigrain and James Allen. Another feed trading company, R&H Hall plc, was purchased by IAWS in September 1990 and at that time was a major acquisition doubling the size of the overall organisation.
Founded in Cork in 1839 and quoted on the stock exchange since 1967, R&H Hall had a record of service to Irish agribusiness. All three companies were merged under the name R&H Hall, as this was the best known of the names.