Diana trained as an Occupational Therapist, qualifying in 1987. She worked at The Royal Free Hospital for two years before spending a year in Australia where she worked for the Commonwealth Rehab Service. Back in the UK she moved to Cambridgeshire and worked in acute and community settings becoming the Rehab Services Manager in a Primary Care Trust. In 2003, she decided to make the move into Commissioning within Cambridgeshire County Council and completed a Masters in Disability Studies in 2008. She continues to work in commissioning with responsibility for the community OT service and the integrated community equipment service.