Most of the interior woodwork is original and is attributed to Grinling Gibbons. This includes the organ case which is carved with cherubs, pea pods and other typical Grinling Gibbons decorations. The famous composer George Frideric Handel was employed by Brydges in 1717-18 as his composer-in-residence. At the time Brydges had yet to be elevated to the dukedom, but the eleven anthems he commissioned from Handel are known as the "Chandos Anthems", and these were almost certainly performed at the church with Handel directing the singers and small orchestra employed by his patron.