Air Security International - Provides international risk assessments and security services.

Airfield Safeguarding & Development - Offers a variety of services to help UK airport operators and local government - including checking planning applications, advice on operational developments, and courses to teach the elements of safeguarding.

Flysense - Offers an airline passenger security certification service.

International Security Defence Systems - Specializing in aviation security training and consulting services, checkpoint security and cargo security.

JP International Aviation Security (UK) Ltd - Offers airport security training, training airport and airline employees. Also advises governments and airport operators.

RWM Protective Service Inc. - Air charter and physical security firm base in New York City offering full service physical security and consultation service.

Transecure, Inc. - Offers aviation security IT consulting services to the transportation and information technology communities. Specializes in airport security and information technology, biometrics and blast analysis