Arch Capital Group Ltd. unit Arch Insurance Europe has completed the acquisition of the U.K. commercial lines business owned by insurance broker The Ardonagh Group Ltd. and part of its Geo Underwriting operating segment.

The acquired business will become the newly formed Arch U.K. regional division. It will be focused on commercial property, casualty, motor, professional liability, personal accident and travel. Approximately 250 employees will move to Arch Insurance Europe as a result of the transaction.