| 1107 | IT Services - Software Development (Including Support)
|
| 1109 | Turnkey Computer Solutions
|
| 1115 | IT Services - Internet/Intranet Development, Maintenance & Support
|
| 1122 | Systems Integration
|
| 1502 | Business Management Consultancy
|
| 1515 | Quality Assessment
|
| 1517 | Stocktaking/Asset Verification & Management
|
| 1524 | R&D Consultants
|
| 1525 | Education & Training
|
| 1527 | Ergonomics & Human Factors Consultants
|
| 1601 | Project Management - Consultants
|
| 1605 | Consultants - Project Risk Management
|
| 1606 | Project Management Consultants - Infrastructure
|
| 1699 | Project Management - Other
|
| 5942 | Surface Coating & Corrosion Consultants
|
| 5943 | Facilities Management
|
| 6502 | Microwave Links
|
| 6599 | Telecoms - Other
|
| 110601 | LAN & WAN Equipment & Services - Complete LAN Solutions
|
| 330501 | IT Software - Application Software
|
| 591101 | Environmental Management Consultants
|
| 592301 | Quality - Consultants
|
| 640201 | Scientific Services - Environmental Improvements
|
| 640202 | Scientific Services - Environmental Management
|
| 640209 | Scientific Services - Environmental Monitoring
|
| 640203 | Scientific Services - Environmental Technical Support
|
| 640305 | Signalling, Safety & Control - R&D and Technical Support
|
| 640306 | Signalling, Safety & Control - Safety & Standards Approval
|
| 640307 | Signalling, Safety & Control - Staff Safety - Radio PeeWee
|
| 640310 | Signalling, Safety & Control - Technical Support Consultancy
|
| 640399 | Signalling, Safety & Control - Other
|
| 650101 | Customer Information Systems - Design, Supply & Install, Test & Commission
|
| 652501 | Telecoms Support - Consultants
|
| 652503 | Telecoms Support - R&D, Technical Support
|
| 780104 | T&RS Group - Plant Condition Reporting & Assessment
|
| 780105 | T&RS Group - Railway Vehicle Condition Reporting & Assessment
|
| 780108 | T&RS Group - Technical Support
|
| 780109 | T&RS Group - Non-Destructive Testing
|
| 780112 | EMC Services
|