| 2008 £m |
2007 £m |
|
| Raw materials | 328 | 223 |
| Work in progress | 1,008 | 732 |
| Long-term contracts work in progress | 34 | 93 |
| Finished goods | 1,192 | 1,123 |
| Payments on account | 38 | 32 |
| 2,600 | 2,203 | |
| Inventories stated at net realisable value | 144 | 154 |
| Amount of inventory write-down | 81 | 79 |
| Reversal of inventory write-down | 15 | 6 |