The cathedral cloisters are haunted by the ghost of a nun, who is said to appear at 7pm in the month of July.
According to the author Coxe in 'Haunted Britain', the apparition emerges from the south wall of the nave then walks to the south wall of the church house and walks through it. The deanery is also reputedly haunted.
For further information, please read Haunted Britain by Antony D. Hippisley Coxe.