St Etheldreda's Church is dedicated to the saint. It was originally part of the palace of the Bishops of Ely. In later years the palace was used by the Spanish Ambassadors, enabling Roman Catholic worship to continue in the church. It is now a Roman Catholic parish church in Ely, Cambridgeshire. It is part of the Diocese of East Anglia within the Province of Westminster. The church contains the shrine and relics of Aethelthryth.