Source: Dove's Guide

The Addleshaw Tower is the first free-standing bell tower to be built by an English cathedral since the 15th century. It has a square plan and is 85 feet (26 m) high. The tower is built on a reinforced concrete frame. The base is faced in local pink sandstone, and contains an entrance on the southwest side, with windows on the other three sides. One window on each side contains Dalle de verre stained glass, and these are flanked by smaller pairs of windows. The entrance is deeply recessed and contains two pairs of timber doors. The upper parts of the tower are faced in Bethesda slates on a timber frame. Above the base are two stages with internally inclined walls, the upper stage being taller than the lower stage. Around the top of the lower stage is a ring of small, square windows. At the top of the upper stage is a ring of small louvred bell openings. On the summit of the tower is a pyramidal roof, which is also covered in slates.

The base contains a meeting room, a small kitchen, and toilets. A spiral staircase leads up to the ringing chamber, where the bell ropes are arranged in a circle. On the walls of the chamber are tablets commemorating peals previously rung by the guild. Above the ringing chamber is the sound chamber and, at the top, the belfry.

Source: Wikipedia