[3] He also a Consultant Psychiatrist working at a community mental health team at the South London and Maudsley NHS Foundation Trust.
He was the founding Head of the Health Services and Population Research Department at the Institute of Psychiatry, Psychology and Neuroscience at King's College London (KCL).
[9] Graham Chaired the External Reference Group to create the National Service Framework for Mental Health in England.
[13] With Professor Norman Sartorius, he established the INDIGO Network,[14] a research collaboration of colleagues in over 40 countries worldwide who work to reduce mental health related stigma and discrimination.
[18] In 2014, Graham and Dr. Nicole Votruba coordinated the FundaMentalSDG initiative[19][20] which contributed to the adoption of mental health related indicators within the United Nations Sustainable Development Goals.
[21] Graham is a member of an international group which produced the 2007 Lancet Global Mental Health series aiming to 'highlight the gaps in mental-health services worldwide, and to formulate a clear call to action'.
[28] In 2009, Graham and his colleagues at the Health Services and Population Research Department at the IoPPN at KCL received the Queen’s Award Prize for Further and Higher Education for work of outstanding excellence.