John I. Thornycroft & Co.

Woolston and Portsmouth, United Kingdom

www.baesystems.com External Link

Merged with Vosper in 1966 to form Vosper Thornycroft at Woolston in Southampton and Porchester in Portsmouth Harbour. Shipbuilding relocated in 2003 to inside Portsmouth Naval Base. The company merged in 2008 with BAE Systems Surface Fleet to form BVT Surface Fleet, becoming BAE Systems Surface Ships in 2009.