Barrel & finger organ, originally a chamber organ. A brass nameplate reads: ‘Guliemus Allen Fecit London’. In 1837 the chaplain Canon Joseph Stephen Pratt restored the church and paid John Gray to convert the instrument to a barrel & finger organ. The organ is located in the west gallery, which has folding seats. The barrel mechanism is operated from the rear, with the crank handle on the right-hand side. The mahogany case has four flats of gold painted dummy pipes (3-7-7-3) backed with blue cloth. An electric blower was installed in 1956. Stop list: Open Diapason 8’, Stopped Diapason Treble 8’, Stopped Diapason Bass 8’, Dulciana 8’, Principal 4’, Fifteenth 2’. Restored in 1989 by Saxon Aldred of Redbourn; barrels restored by Donald Simmonds in 1990-1. Tunes recorded in 1997. BIOS Historic Organ Certificate awarded 2022 (Grade I). Four green carriage-mounted barrels x 8 tunes. There are no tunelists. The knife mechanism is not operational, so the keyframe has to be lifted off the barrel manually.

References: Cadbury Research Library, Gray & Davison Ledger 1 (1837) p.141; Boston & Langwill (1967); Kilbey Music-making in the Hertfordshire parish 1760 to 1870 (Hatfield, 2020) p.168; NPOR, N14170.