Hong Kong Aero Engine Services Limited (HAESL)
HAESL is a joint venture of Rolls-Royce (45%), HAECO (45%) and SIAEC (10%).

Industria de Turbo Propulsores
Industria de Turbo Propulsores SA, Spain. Rolls-Royce plc has a 46.9 per cent shareholding.

International Aero Engines
Manufacturers of the V2500 civil aerospace engine. Rolls-Royce plc has a 32.5 per cent shareholding.

N3 Engine Overhaul Services
N3 is a joint venture between Lufthansa Technik and Rolls-Royce.

Rolls Wood Group
Service experts on Avon, RB211, Olympus and 501K & 570/571K engines.

Williams-Rolls Inc.
Designs and manufactures FJ44 aircraft engines (for civil and defense applications) with Williams International (Walled Lake, MI).