Gwen has extensive experience of person-centred working with people who have learning disabilities, families, advocates, health professionals and others to improve the quality of health experiences and outcomes. She has worked with a wide range of health needs and complexity across inpatient and community care and been influential in changing and developing services. She developed pain profiles designed to help professionals identify the likely presence of pain in people with complex communication needs. Gwen co-created the Health Equalities Framework (HEF and CYP HEF); and the Moulster & Griffiths Learning Disability Nursing Model (2012) with Tom Griffiths (latest revision 2021). She works with a range of health organisations to support implementation of the model in practice, enabling it to be embedded in electronic patient records. Gwen was awarded an OBE in Queen Elizabeth 2nd's 90th birthday honours in 2016, for services to people with learning disabilities and nursing.