BAE Systems Platforms & Services is a wholly owned subsidiary of BAE Systems Inc. and is a large provider of tracked and wheeled armored combat vehicles, naval guns, naval ship repair and modernization, artillery and missile launching systems, advanced precision strike munitions and ordnance, and other technologies for U.S. and international customers.

Vickers Shipbuilding and Engineering, Ltd (VSEL) was a shipbuilding company based at Barrow-in-Furness, Cumbria in northwest England that built warships, civilian ships, submarines and armaments. The company was historically the Naval Construction Works of Vickers Armstrongs and has a heritage of building large naval warships and armaments. Through a complicated history the company's shipbuilding division is now BAE Systems Submarine Solutions and the armaments division is now part of BAE Systems Land & Armaments.