The western boundary runs south from the junction of the Borough with the commencement of Palace Street, where it follows the eastern frontage line of Palace Street to a point in Sun Street where it meets the Cathedral Precincts boundary. Its southern boundary runs along the line of the Cathedral Priory's boundary from Sun Street to the N. W. Tower of the Cathedral. From here, the eastern boundary runs in a slightly zig-zag line northwards along the boundary of the Cathedral Precincts until it reaches a line at right angles to the junction of the Borough and Palace Street to which it runs forming the northern boundary.