The Anglican Diocese of Leeds (previously also known as the Diocese of West Yorkshire and the Dales) is a diocese (administrative division) of the Church of England, in the Province of York. It is the largest diocese in England by area, comprising much of western Yorkshire: almost the whole of West Yorkshire, the western part of North Yorkshire, the town of Barnsley in South Yorkshire, and most of the parts of County Durham, Cumbria and Lancashire which lie within the historic boundaries of Yorkshire. It includes the cities of Leeds, Bradford, Wakefield and Ripon. It was created on 20 April 2014 following a review of the dioceses in Yorkshire and the dissolution of the dioceses of Bradford, Ripon and Leeds, and Wakefield.