The church of St Andrew Undershaft (the name is derived from the shaft of the maypole which was traditionally set up opposite the church every Spring until 1517) in the City of London dates from 1147, with a rebuilding in the 14th century. The church has survived both the Great Fire of London and the Blitz, unlike most churches in the city.
The church is in the Perpendicular style with a tower added in the 15th century. The church has an aisled six bay nave with clerestory. The church is built from squared rubble.