Demographics of selected regional neurosurgery services
| Unit | No. of hospitals served | Population served (million) | Range of hospitals | Transfer times | Notes |
| Stoke-on-Trent19 | 5 | 1.7 | - | 20 min–65 min | |
| Salford36 | 11 | 3.2 | Less than 25 miles | Median 5.25 h for EDH, 6.0 h for SDH | Local resources prevent all patients being transferred |
| Cambridge37 | 8 | 3.0 | Max 76 miles Half >40 miles | Median 5.4 h | 1/24 patients operated on in under 4 h |
| Southampton38 | 8 | 3.0 | Range 19–85 km | Mean time to decompression 5.0 h |
EDH, extradural haematoma; SDH, subdural haematoma.