| Industry studies | |
|---|---|
| Classmark | Subject |
| Utilities | |
| 26 A |
Utilities (General) |
| 26 AA |
Water |
| 26 AB | Telecommunications |
| 26 AC | Electricity |
| 26 AD | Gas |
| Energy | |
| 26 B |
Energy (General) |
| 26 BA |
Oil |
| 26 BB | Nuclear |
| 26 BC | Renewables (General) |
| 26 BD | Wind |
| 26 BE |
Wave |
| 26 BF |
Solar |
| Transport | |
| 26 C | Transport (General) |
| 26 CA | Sea |
| 26 CB | Air |
| 26 CC |
Road |
| 26 CD |
Rail |
| Services | |
| 26 D | Services (General) |
| 26 DA | Retailing |
| 26 DB | Arts & culture |
| 26 DC |
Sport |
| 26 DD |
Tourism |
| Primary products & construction | |
| 26 E | Primary products & construction (General) |
| 26 EA | Steel industry |
| 26 EB | Mining |
| 26 EC |
Coal |
| Manufacturing | |
| 26 F |
Manufacturing (General) |
| 26 FA | Cars |
| 26 FB | Chemicals |
| 26 FC | Computers |
| 26 FD |
Food |
| 26 FE |
Textiles |
| 26 FF | Pharmaceuticals |
