South East Coast Ambulance Service missing target times
An ambulance trust that has been in special measures for more than a year is consistently failing to meet the national target for 999 call-outs.
Last month, South East Coast Ambulance Service (Secamb) reached 50.8% of red one calls and 39.9% of the less serious red two calls within eight minutes.
The national target is 75%, and chief executive Daren Mochrie called the figures "extremely disappointing".
MP Peter Kyle said it was "the worst performance ever recorded in the UK".
The Labour MP for Hove and Portslade said he would be calling for a meeting with the trust and the regulator, NHS Improvement.
The September figure for red one call-outs was significantly lower than the previous two months, with 59.4% for August and 57.5% for July.
The trust's figures also revealed that only 48.6% of 999 calls made last month were answered within five seconds.
Secamb - which covers Kent, Surrey, Sussex and North East Hampshire - went into special measures in September 2016 when it was rated inadequate for patient safety by the Care Quality Commission (CQC).
Earlier this month, the CQC published a report which said the service had failed to improve sufficiently.
An independent review in August also exposed a culture of bullying and harassment with concerns over "toxic" atmospheres, sexual grooming and a fear of speaking out.
In a statement, a spokesman for the trust said: "We recognise that, along with other ambulance trusts nationally, we are not meeting response time targets.
"We also recognise that in recent months our performance has continued to be lower than we would like."
The trust said these were due to a number of factors, including staffing and additional training within its emergency operations centres, and delays at hospitals.