arb underwriting ltd. was founded as a limited company in 1991, one of the largest wholesale underwriting agencies in Ireland. Based in dublin, arb Underwriting Limited is regulated by the central bank of Ireland and offers a broad range of risk solutions from alternative markets to a nationwide network of brokers. team are made up of experienced insurance employees and aim is to provide a high level of service with a wide range of quality insurance products in both standard and niche markets.