The document summarizes new guidelines for oncoplastic breast reconstruction developed by a multidisciplinary writing group in response to findings from the National Mastectomy and Breast Reconstruction Audit. The guidelines establish 25 quality criteria across key areas of preoperative care, surgery, and postoperative management based on audit outcomes. The criteria set standards for areas like infection control and pain management to improve clinical outcomes and patient experience based on the best available evidence. A patient version was also developed to clearly communicate expectations of care. The guidelines aim to enhance multidisciplinary care and support at each stage of a patient's breast reconstruction journey.