We are a team of researchers at Bangor University, Wales, UK, funded by the National Institute for Social Care and Health Research (NISCHR), Welsh Government. We advise and support the research infrastructure across the bilingual context of Wales on best practice approaches for enhancing Welsh language awareness in clinical research. Through our respective infrastructure support groups, LLAIS (the Language Awareness Infrastructure Support Group) and NWORTH (the North Wales Organisation for Randomised Trials in Health), we engage with the research community to respond to their priorities. We have developed a bespoke programme of work that will extend the validation of Welsh language versions of health measures and enhance their availability and accessibility for the health and health research community across Wales, UK.