| System |
| Ownership | BAA (Ferrovial) |
| Date opened | 1998 |
| Route length | 16.5 miles (26.5km) |
| Gauge | 1,435mm |
| Maximum line speed | 100mph (160km/h) |
| Passengers carried/daily average | 15,000 |
| Power supply | 25kV ac, overhead supply |
| Rolling stock builder | Siemens (also CAF for Class 332) |
| Class 332 fleet total | 14 |
| Formation | Four and five car |
| Capacity | 230 (four-car), 286 (five-car) |
| Class 360/2 fleet total | 5 |
| Formation | Four car units |
| Capacity | 280 seated; 130 standing |
| Special Characteristics |
| Fast and regular service to world's busiest international airport | |
| New terminal building served by major new rail station | |
| Stopping service introduced to attract more local passengers | |
| Re-direction of services with airport expansion | |
| Featured Suppliers |
| A. Rawie - Track Safety Systems |
| Atkins - The Leading UK Based Railway Consultancy |
| Bonar Floors - Train Carriage and Station Flooring |
| ContiTech Railway Engineering - Railway Suspension Systems |
| Design Triangle - Rail Vehicle Design Specialists and Transport Design Consultants |
| edilon)(sedra - Embedded Rail and Embedded Block Systems |
| Faber Maunsell - Total Solutions for the Rail Sector |
| Faiveley Transport - Passenger Access Products, Air Conditioning, High-Voltage Solutions and On-board Electronics |
| Firstco - Systems Engineering Consultants and Systems Integrators |
| Getzner Werkstoffe - Vibration and Noise Protection Products for Railway Superstructures |
| Knorr-Bremse - Rail Braking Systems, Air Supply Systems, Platform Screen Systems, Service and Maintenance Support |
| Laser Rail - Clearance Gauging and Measurement Solutions |
| OLEO International - Hydraulic Energy Absorbers |
| Pandrol Rail Fastenings - Rail Fastening Systems |
| Powertron Converters - DC-DC Converters and DC-AC Inverters |
| Rexquote - Road Rail Machines for Railway Infrastructure Maintenance |
| Saargummi - Vibration and Noise Reduction Systems / Foamed EPDM Elastomer |
| Scott Wilson - International Multi-disciplinary Railway Consultancy |
| Siemens Transportation Systems - Signalling and Control Systems |
| Sika - Flexible Rail Fixing Materials for Direct Fixation Systems |
| Thales - Specialist Telecommunications Services to the UK Rail Industry |
| Transmitton - Integrated Control and Asset Management Solutions for the Rail Industry |
| Transtechnik - Power Electronics and Converter Solutions |
| Voith Turbo - Power Transmissions, Couplers and Retarders for Rail Vehicles |
| Westinghouse Rail Systems - Signalling and Train Control Systems |