Aermacchi
AgustaWestland
Airbus
Alenia
BAE Systems
Boeing
Britten-Norman
Embraer
Gulfstream
Lucas Aerospace
Messier-Dowty
Raytheon
Rolls-Royce
Saab
Sikorsky
Stork SP
UK MoD
Vickers D.S.
Westlands

The Society of British Aerospace Companies
http://www.sbac.co.uk/

The Defence Manufacturers Association
http://www.the-dma.org.uk/

APPH Ltd is a Corporate Friend of the Manchester Branch of The Royal Aeronautical Society
http://www.raes.org.uk/

North West Aerospace Alliance
http://www.aerospace.co.uk/

The Air League
http://www.airleague.co.uk/