Sir Ian Carruthers has left his position as chair of Portsmouth Hospitals Trust after his two year tenure ended.

Sir Ian will remain in the local health system as a “strategic adviser” in the development of an accountable care system in the region.

The region was not one of the eight ACSs announced by Simon Stevens last month that will receive £450m of transformation funding.

Sir Ian leaves the trust at a time when it is grappling with poor accident and emergency performance, and ahead of the publication of a Care Quality Commission inspection report.

The trust’s board papers for May show it achieved 75 per cent against the 95 per cent four hour A&E waiting target, and there were 38 breaches of the 12 hour trolley waiting time standard.

The trust was also served with a notice in May under section 31 of the Health and Social Care Act 2008, which resulted in six conditions being imposed on the trust’s registration to ensure patient safety.

The trust also has to make £34m of savings in 2017-18 – more than 6 per cent of its income.

Sir Ian said: “Even though significant challenges remain in urgent care and financial health, improvements have been made and much has been achieved across the total range of services provided throughout Portsmouth and South East Hampshire.”

He began working in the NHS in 1969, when he joined Garlands Hospital in Carlisle as a trainee administrator – going on to have a spell as interim chief executive of the NHS in 2006.

He later served as chief executive of the South of England strategic health authority cluster, covering the South Central, South West, and South East Coast regions.

Deputy chair Mark Nellthorp will become interim chair of the trust until a new chair is in post. The trust said it wished to make a new appointment “as soon as possible”.