Basildon and Thurrock University Hospitals NHS Foundation Trust 

Bedford Hospital NHS Trust

Bedfordshire CCG

Cambridge University Hospital NHS Foundation Trust (Addenbrooke's Hospital)

Cambridgeshire & Peterborough Mental Health Partnership NHS Trust

Cambridgeshire Primary Care Trust

Colchester Hospital University NHS Foundation Trust

East and North Hertfordshire NHS Trust (Lister, Queen Elizabeth and Mount Vernon Hospitals)

East and North Hertfordshire Primary Care Trust

East Suffolk and North Essex

Great Yarmouth and Waveney Primary Care Trust

Hertfordshire Partnership NHS Foundation Trust

James Paget University Hospital NHS Foundation Trust

Luton and Dunstable Hospital NHS Foundation Trust

Luton CCG

Mid Essex Hospital Services NHS Trust (Broomfield Hospital)

Mid Essex CCG

Norfolk and Norwich University Hospital NHS Trust

Norfolk and Suffolk NHS Foundation Trust

Norfolk Community Health and Care NHS Trust

North East Essex CCG

Essex Partnership NHS Foundation Trust

North West Anglia NHS Foundation Trust

Papworth Hospital NHS Foundation Trust

Peterborough and Stamford Hospitals NHS Foundation Trust

The Princess Alexandra Hospital NHS Trust

The Queen Elizabeth King's Lynn NHS Trust

Southend University Hospital NHS Foundation Trust

Suffolk Primary Care Trust

West Essex CCG

West Hertfordshire NHS Trust (Watford General and Hemel Hempstead Hospitals

West Suffolk Hospitals NHS Trust