The Wrightington, Wigan and Leigh NHS Foundation Trust (WWL) OMOP database comprises longitudinal secondary care data derived from routinely collected electronic health records for patients across the Wigan borough and surrounding areas. Alignment to the OMOP Common Data Model (CDM) enables interoperability with other OMOP standardised datasets and facilitates privacy preserving, multi centre observational research. The database captures a wide range of secondary care activity, including patient demographics, diagnoses, procedures, and outcomes. This provides a robust foundation for research across diagnostics, elective and emergency care pathways, long term conditions, population health, and service evaluation within a district general hospital setting. Alignment to OMOP standards enables use of OHDSI analytical tools and participation in federated analytics, supporting reproducible and collaborative research across institutions. Wrightington Hospital is home to WWL’s internationally recognised Orthopaedic and Musculoskeletal Centre of Excellence, established through Professor Sir John Charnley’s pioneering work on modern hip replacement in 1962. With approximately 1,600 hip and 1,000 knee replacements performed annually and specialist-led complex surgery, the Trust holds high quality longitudinal data well suited to implant survivorship, device surveillance, pathway evaluation, health economics, and national benchmarking. Overall, the WWL OMOP database represents a growing and strategically important research asset. .Its combination of high quality routinely collected clinical data, internationally recognised clinical services, and alignment to global data standards, positions WWL to contribute meaningfully to collaborative research initiatives and to generate insights that can directly inform improving patient outcomes.