The short answer
- The A&E 4-hour target is the standard that patients leave A&E within four hours. In England, every trust is to reach 82% by March 2027.
- The clock exists because crowding harms patients. It must never drive an unsafe discharge.
- For you: work each patient up efficiently, decide early, and tell the nurse in charge where they’re going.
On this page
The clock on the board
Every ED has a time target, and you’ll see it on the board as a clock beside each patient. It exists because crowding harms patients. It must never drive an unsafe discharge.
It helps to know why the clock runs. The ED is where a struggling health system shows its symptoms. Patients mostly wait in the ED because of problems further along: no inpatient bed, and nowhere to go once they’re ready to leave.
The 4-hour standard in each nation
The UK works to a four-hour standard. In England, every trust is to reach 82% by March 2027. Scotland, Wales and Northern Ireland have their own standards, and Wales and Northern Ireland also have a 12-hour standard.
What the clock means for you
What the clock means for you is simple. Work each patient up efficiently, make your decisions early, and tell the nurse in charge as soon as you know where a patient is going. A patient waiting for a bed or a transfer still needs your care while they wait: check on them, chase their results, and keep their observations and medicines up to date.
Triage: who is seen first
Triage makes sure the sickest people are seen first, not the people who arrived first.
In England, patients should have an initial assessment within 15 minutes of arrival. That’s streaming, then triage (many EDs use the Manchester Triage System), and in some EDs a rapid assessment and treatment (RAT) team with a senior decision maker. Simple analgesia and simple tests can start at streaming or triage under local protocols.
For how a shift runs around the clock, see the emergency medicine survival guide.
General education for doctors, not advice about a particular patient. Your hospital’s policies and your seniors always come first.
Sources (5)
- Medium Term Planning Framework: delivering change together 2026/27 to 2028/29NHS England
- Accident and Emergency wait times across the UKOffice for National Statistics (ONS)
- Guidance for emergency departments: initial assessmentNHS England, in partnership with the Royal College of Emergency Medicine
- Manchester Triage System (triagenet classroom home)Manchester Triage Group
- Initial Assessment of Emergency Department PatientsRoyal College of Emergency Medicine
Adapted from Get Started in Emergency, UK Edition.