Percentage triage categorisation for transported patients
| Incident | Westminster Bridge | Manchester Arena | London Bridge |
| Principle mechanism | Blunt polytrauma | Blast/ballistic | Blunt polytrauma and penetrating |
| P1 (critical) | 17% | 35% | 52% |
| P2 (urgent) | 34% | 40% | 15% |
| P3 (walking) | 48% | 25% | 33% |