Enstar Group Limited acquires and manages insurance and reinsurance companies and portfolios in run-off across the United States, the United Kingdom, Europe, and internationally. Its activities include run-off property and casualty, other reinsurance, and investments. The company was formerly known as Castlewood Holdings Limited and changed its name to Enstar Group Limited in January 2007. Founded in 1993, it is headquartered in Hamilton, Bermuda.