ROMAN, Anglo-Saxon and medieval heritage will be revealed when York's oldest working church, St Mary Bishophill Junior opens with a display in the tower on August 5 between 11.30am and 4pm.

The Rudgate Singers will give a performance of medieval monastic chant, singing mass in the Latin rite of Compline at 2.30pm.

The event is part of the Church Explorers season run by Jorvik.