In the Martyrs Chapel in the church there is a reliquary over the altar. It contains a piece of Becket’s vestment and a piece of a bone from his body. In the late 19th century, these were given to the church by Mary Hales, of the Hales baronets. The relics came from Gubbio in Umbria, where, since the 1220s, they had been held. In 1953, the Prior of Chevetogne Abbey, called Fr Thomas Becquet, a descendant of family of the martyr, gave a piece of Becket’s finger to the church. Either side of the reliquary are statues of St John Fisher and St Thomas More. The chapel has a stained glass window showing the martyrdom of St Thomas Becket, St Gregory the Great and St Augustine of Canterbury.
