a lantern for shipping was added to the top of the tower in 1703. A ring of eight bells was given at the same time. Two additional bells were cast in 1957 and currently the central tower contains a total of 12 bells. All of the bells were cast at Taylor's Bell Foundry and are hung in the wooden octagonal part of the tower. Various repairs and alterations were made during the eighteenth and nineteenth centuries. In 1902, the church was closed for two years so that much-needed work on the foundations could be carried out. During this period, St Mary's Colewort, a chapel of ease, served as the temporary parish church. Cathedral The establishment of the Diocese of Portsmouth out of part of the Diocese of Winchester in 1927 brought about significant changes. On 1 May of that year, the parish church of St Thomas of Canterbury became the pro-cathedral of the new diocese, becoming the second cathedral in Portsmouth, as the Roman Catholic Cathedral of St John the Evangelist had already opened in 1882. At a chapter meeting in October 1932, a first sketch plan for an extension to the church was submitted by Charles Nicholson. He was called upon to extend the church to a size that would dignify its cathedral status; by 1935 the "provisional" nature of its title had been dropped. The style that Nicholson chose is that of a round-arched "Neo-Byzantine" style that echoed the "classical" style of the late seventeenth century quire. By 1939 the outer quire aisles, the tower, the transepts and three bays of the nave had been completed. The base of the seventeenth century tower had been opened up to form the tower arch. However, with the Fall of France in June 1940 during World War II, work on the extension scheme stopped and the bays of the nave were blocked off with a "temporary" brick wall. This wall remained there for over fifty years. During the Second World War, the Cathedral suffered minor damage to the windows and the roof. Nicholson died in 1949 and attempts headed by Bernard Montgomery to finish the structure in the 1960s proved unsuccessful due to substantive failure to find sufficient funds. Plans published in 1966 by Seely & Paget, with Pier Luigi Nervi as consulting engineer, envisaged a large semi-circular western extension 76 feet wide, constructed of reinforced concrete. The vast extension would