The main body of St Peter’s Church is constructed over a period of about 50 years. By 1220 the north and south transepts and the lower part of the tower have been built. The church is then extended westwards, with the addition of a long nave. Aisles are added to the north and south by 1230, and the Lady Chapel is added to the east side of the north transept. By 1250 the core part of St Peter’s Church has been completed.
