 The bell tower has a ring of eight bells. The third bell was cast by Richard Keene of Woodstock in 1697. The fourth was cast by Henry III Bagley of Chacombe, Northamptonshire in 1716. Bagley had more than one bell-foundry, but the nearest was at Witney. The fifth was cast by Edward Hemins of Bicester in 1743. St Mary's has a bell cast by W. & J. Taylor in 1840, presumably at their then Oxford foundry. In 1928 Taylors cast the treble, second and tenor bells, but at their Loughborough foundry St Mary's also has a small Sanctus bell cast by Peter de Weston of London in about 1336.
