| AFS Fuelling | Air Canada |
| Aircraft Service International Group | Alpha Group |
| American Airlines | ARCO |
| BAA - Heathrow Airport Ltd | Berkshire NHS |
| British Airways | Brittania Airways |
| Cathay Pacific Airways Ltd | Dnata |
| Easyjet | Exxon Mobil |
| FedEx Express Europe Inc | FlyBMI |
| Gate Gourmet | Globe Ground Handling |
| Groundstar | H.A.L |
| Health & Safety Executive | Hi-Vis Solutions |
| HM Customs | I.O.S.H |
| Japan Airlines | Key Aviation Skills Ltd |
| KLM Ground Services | London City Airport |
| Manx Airlines | Marsh Ltd (Risk Consulting) |
| Menzies Aviation Group | Metropolitan Police |
| Monarch-Airlines | OCS Ltd |
| PACTS | R.P.A.S |
| Reed Aviation | RiskMark |
| Safetymark Consultancy Services Ltd | SAS |
| Securicor Aviation Ltd | Servisair |
| Shell U.K. | Signatureflight |
| Skychefs | Stansted Into-Plane Co Ltd |
| STS | Thomas Cook |
| Tuf Work and Safety Wear | United Airlines |
| UVEX | Virgin Atlantic Airways Ltd |
| Wackenhut UK Ltd |