By 1902, Grocott was in charge of Wilkinson and Sons' branch chemist shop in
George Street, Dunedin, and was living above the shop. Two years later, he had his own chemist's shop in
Roxburgh, building a large new house and shop in Scotland Street, and he took on
Sydney Smith, who would go on to become a renowned forensic scientist and pathologist, as an apprentice. Grocott sold the business in 1907. After a short period in
Eltham where he owned a pharmacy, Grocott later moved to
Hamilton, purchasing
Arthur Edwards Manning's pharmacy business and optometry practice in 1911. Manning went on to serve as
mayor of Hamilton from 1912 to 1915. In 1920, Grocott travelled to
London, where he passed the examinations set by the
Worshipful Company of Spectacle Makers, gaining him Fellowship in Optometry of the Worshipful Company of Spectacle Makers (FSMC). He was also admitted to the Freedom of the City of London by redemption, in the Company of Spectacle Makers, and was appointed as a Fellow of the British Institute of Opticians. Grocott retired to
Auckland in the early 1930s. ==Lawn bowls==