St George’s, Epsom and St Helier Hospital Group

After years of collaboration and creating closer working ties, Epsom and St Helier University Hospitals NHS Trust and St George’s University Hospitals NHS Foundation Trust formed a hospital group. Jacqueline Totterdell was appointed Group Chief Executive in August 2021.

Gillian Norton, is chair of both trusts and took up the role as Chairman in Common in 2019.

Working as a hospital group allows for more joined-up decision making for the benefit of local people, a larger and more resilient clinical workforce, reduced variation in levels of care, and more access to a wider range of services for our patients.

Epsom and St Helier and St Georges remain two separate trusts but with one executive team enabling us to work closer together and build on our strong foundations.

We already work closely together and run joint services such as the South West London pathology network and we’re building a specialist kidney unit to improve care to our patients.

New leadership teams

In December 2021, we announced our new group executive team to lead our hospital group.

The group executive team will be in operation from 10 January 2022. Biographies of our group executive team can be found below.

Jacqueline Totterdell, Group Chief Executive Officer

Portrait of Jacqueline Totterdell Jacqueline was appointed the Group Chief Executive of the St George’s and Epsom and St Helier hospitals group in August 2021, after joining St George’s University Hospitals NHS Foundation Trust as Chief Executive in May 2017.

A Paediatric Intensive Care Nurse by background, Jacqueline started her general management career at Leeds General Infirmary, moving on to Birmingham Children’s Hospital, after which she spent two years working for the Modernisation Agency.

After two Executive Director posts at Barnet & Chase Farm Hospitals NHS Trust, and then Hillingdon Hospitals NHS Foundation Trust, Jacqueline held Chief Executive positions at Southend University Hospital NHS Foundation Trust and West Middlesex University Hospital where she oversaw the merger of the Trust with Chelsea and Westminster NHS Foundation Trust.

Before taking up her role at St George’s Hospital in May 2017, Jacqueline spent 18 months as part of the Executive Team supporting Barts Health NHS Trust out of Special Measures.

Dr James Marsh, Group Deputy Chief Executive Officer

Portrait of Dr James Marsh James has been at Epsom, Sutton and St Helier hospitals for more than 11 years, joining as a renal (kidney) consultant in 2003, before being made lead consultant for transplantation and, subsequently, clinical director for renal services. He was appointed as Deputy Medical Director in 2011.

He graduated with first class honours from the University of Oxford in the mid-1980s, continuing his clinical training at Guy’s Hospital where he earned a Distinction in pathology, surgery, pharmacology and therapeutics.


Dr Richard Jennings, Group Chief Medical Officer

Portrait of Dr Richard Jennings Dr Richard Jennings joined St George’s in December 2018 as Chief Medical Officer. Richard joined St George’s from Whittington Health NHS Trust, where he had been Executive Medical Director for four years.

Dr Jennings specialises in infection and acute medicine, and underwent his training at the London School of Hygiene and Tropical Medicine. Before becoming Executive Medical Director at the Whittington, he held the posts of Clinical Director for medicine and then Deputy Medical Director.

Arlene Wellman MBE, Group Chief Nursing Officer

Portrait of Arlene Wellman Arlene qualified as a general registered nurse in Trinidad and migrated to the UK with the intention of training as a midwife. However she fell in love instantly with elderly care nursing and has more than 20 years’ experience in this speciality. Arlene holds a first degree in Health and Social Care for Older People and a Master’s degree in Clinical Healthcare Practice.

She has held various senior nursing roles across acute trusts, including Matron, Senior Matron and Divisional Nurse at Oxford University Hospitals NHS Trust.


Andrew Grimshaw, Group Chief Finance Officer

Portrait of Andrew Grimshaw Andrew has over 30 years’ experience in NHS finance and has worked in wide range of organisations from district general hospitals, tertiary, teaching and ambulance trusts. He joined St George’s Hospitals as Chief Financial Officer in 2017 and also held the post of Deputy Chief Executive from 2019 until the formation of the Group.



Paul da Gama, Group Chief People Officer

Portrait of Paul da Gama Paul da Gama joined St George’s as our Chief People Officer in February 2021. Paul joined the Trust from West Hertfordshire Hospitals NHS Trust, where he had been Chief People Officer since 2014. Prior to joining West Herts, Paul was Director of Human Resources at Hinchingbrooke Hospital. Paul began his career as a teacher, working in Japan and Poland, before joining banking group, HSBC, where he worked for 10 years. He has also worked at Royal Mail Group, where he held a variety of different senior HR roles.


Stephen Jones, Group Chief Corporate Affairs Officer

Portrait of Stephen Jones Stephen joined the Trust as Director of Corporate Affairs in March 2018. Stephen was previously Chief of Staff and executive lead for corporate governance at the General Medical Council. Prior to this, Stephen worked as Stakeholder Engagement Director on Co-operation and Competition policy at Monitor (now NHS Improvement). He also held a number of senior policy roles within the Department of Health, including on provider policy, the NHS Constitution and legislative reform, and served as Senior Private Secretary to the Minister for Quality.

Kate Slemeck, Managing Director for St George’s Hospital

Portrait of Kate Slemeck Kate previously worked at Royal Free Hospital as director of operations in 2011 before being appointed as chief operating officer in 2012 and then becoming chief executive of the Royal Free Hospital in 2018.

Kate originally trained as an Occupational Therapist. Her previous roles also include Director of Operations and Chief Operating Officer and she has nearly 30 years’ NHS management experience, mainly in acute trusts (including Northwick Park Hospital and the Royal Hospital for Neurodisability).


James Blythe, Managing Director for Epsom and St Helier hospitals

Portrait of James Blythe James joined the NHS via the national Management Training Scheme in 2004. After roles in acute hospitals, commissioning and management consultancy, he was Director of Commissioning of Surrey Downs CCG from 2014 to 2017, and Managing Director of Merton and Wandsworth CCGs from 2017 to 2020.

James was seconded to work across ESTH and SGUH as Collaboration Programme Director from September 2020, leading to the agreement of the new hospital group by both Boards in June 2021. Through his CCG roles in Surrey and Merton, James has had longstanding involvement with plans to redevelop the acute estate at ESTH, and also recently led the engagement and decision-making process for an integrated renal service between the two Trusts. James is an Epsom resident and out of work, a keen runner.

Thirza Sawtell, Managing Director for Integrated Care

Portrait of Thirza Sawtell Thirza began her career as a Health Visitor before moving into the operational management of community services and then into the commissioning and strategic planning of health and care services. She is currently Executive Director of Integrated Care for Epsom and St Helier University Hospitals NHS Trust, responsible to the Partnership Boards of Surrey Downs and Sutton each of which deliver a wide range of truly integrated community services for their local communities. Prior to this she was Director of Strategy for the North West London Collaboration and led the Pioneer Whole System Integration Programme.


About our Trusts

Epsom and St Helier University Hospitals NHS Trust 

St George’s University Hospitals Foundation Trust

More information and latest news

You can read more about what the collaboration will mean, as well as some of the collaboration that’s already underway below.

Group model marks new chapter for Epsom and St Helier and St George’s Hospitals 

Eight out of ten kidney patients support proposal for new renal unit at St George’s

Get connected

  • Like us on Facebook 
  • Follow us on Twitter
  • Follow us on LinkedIn 
  • Reviews on NHS Choices
  • Watch our videos


  • Like us on Facebook
  • Follow us on Twitter 
  • Follow us on LinkedIn
  • Review on NHS Choices
  • Watch our videos

NHS image placement

Healthy Workplace Achievement Award 2016 NHS Choices