The British Society of Gastroenterology guidelines provide a practical and evidence-based resource for the management of patients with Barrett’s oesophagus and related early neoplasia. The guidelines cover key questions such as definition, screening, diagnosis, surveillance, pathological grading, management of dysplasia, and early cancer. The development process involved a systematic literature review, evaluation of study quality using the SIGN checklist, and consensus among authors using a five-tier scoring system. The guidelines recommend stratifying patients based on estimated cancer risk and using minimum datasets for reporting endoscopic and pathological findings. Endoscopic therapy is recommended for high-grade dysplasia and early cancer, preferably in high-volume centers. The guidelines also address the role of chemoprevention, imaging, and surgical management. They emphasize the importance of patient perspectives and aim to standardize and improve management practices.The British Society of Gastroenterology guidelines provide a practical and evidence-based resource for the management of patients with Barrett’s oesophagus and related early neoplasia. The guidelines cover key questions such as definition, screening, diagnosis, surveillance, pathological grading, management of dysplasia, and early cancer. The development process involved a systematic literature review, evaluation of study quality using the SIGN checklist, and consensus among authors using a five-tier scoring system. The guidelines recommend stratifying patients based on estimated cancer risk and using minimum datasets for reporting endoscopic and pathological findings. Endoscopic therapy is recommended for high-grade dysplasia and early cancer, preferably in high-volume centers. The guidelines also address the role of chemoprevention, imaging, and surgical management. They emphasize the importance of patient perspectives and aim to standardize and improve management practices.