Byfield, England and Russell built a new organ in the west gallery of St Helen's Church in 1780, incorporating the fine case by Abraham Jordan dating from 1726. The organ was moved in 1849 to a position near the south door of the nave. It was rebuilt by Hill in 1873 and relocated in the chapel on the south side of the chancel, with the Jordan case facing north.
In 1927 the organ was rebuilt by Harrison & Harrison. The Jordan case (turned to face west) and some pipes were retained from the previous  instrument, but in all musical and mechanical  respects this was a new organ. The attached  console is on the north side.
A number of alterations were made to the pipework when the organ was overhauled by Hill, Norman & Beard in 1971, but there were no alterations to the 1927 console and pneumatic mechanism. The work of 2005 by Harrison & Harrison consisted of comprehensive restoration, with reinstatement of the original specification and voicing. At the same time the organ was moved a short distance to the west, in connection with the re-ordering of the nave.