Listed Grade II building constructed in 1837 to the designs of James Fenton of Chelmsford and altered on two or three occasions, the ground floor windows being replaced by a loggia in 1912.
• Removal of 1912 loggia back wall and side entrance doors and insertion of a glazed screen and automatic doors.
• Removal of inner passageway and formation of a foyer area below the existing balcony.
• Formation of new toilet and refreshment facilities to serve the foyer and the Sanctuary.