The Trust has released a statement saying Maria Ball has resigned with immediate effect.
The process for appointing a new or interim chair will be started immediately but in the meantime Paul Remington who is vice chair will lead the organisation with Andrew Morgan, the interim chief executive.
More top news
A primary school in Essex has come up with a new way to help tackle racism and show how closely connected we all are.
An exclusive report by ITV Anglia has found that the number of female directors in our region falls well below the national average
Almost a quarter of ambulance staff took stress-related time off in 2016-17, in the East Midlands.