Coyle Hamilton has merged its business with HSBC Insurance Brokers. The merger follows HSBC's recent incorporation with the Assurex Synergy Service Group in Britain of which Coyle Hamilton is an associate member. Assurex is the largest network of independent brokers in the world, with turnover of more than $12 billion (€12.4 billion). In Ireland, HSBC has an annual premium income of £2.5 million (€3.2 million).