Patients wait 16 hours in casualty unit which is set to become MORE busy when neighbouring A&E closes A&E at Chase Farm is due to close, sending even more patients to Barnet Campaigners say the decision to close Chase Farm A&E is "deeply flawed" By Stephen Adams Patients have had to wait 16 hours in an "extremely busy" accident and emergency ward - even before a neighbouring casualty unit closes. Emergency cases have been left on trolleys at Barnet Hospital, North London, because the wards were full. Yet from November, staff will have to deal with hundreds more patients every month, as the A&E at nearby Chase Farm in Enfield is due to close. Left on trolleys: Patients have been known to wait 16 hours in the 'extremely busy' accident and emergency ward Campaigners say the new figures show the decision to close Chase Farm A&E is "deeply flawed." The Care Quality Commission, the health watchdog, found that 24 patients had to wait more than 16 hours at Barnet's A&E in four weeks in April and May. Another 108 had to wait ten to 16 hours. Strain: Staff at Chase Farm Hospital in Enfield Department of Health rules stipulate that 95 per cent of A&E patients should be discharged or admitted to a ward within four hours otherwise it is a sign the hospital is under stress. A spokesman for the hospitals" NHS Trust blamed the delays on building work, but insisted the department would be able to cope. A high court judge will decide this month if the A&E at Lewisham Hospital, South-East London, should be downgraded in 2016.