Foto: Andrew & Jane Wood © 2016
In 1877 bouwde Henry Willis & Sons een nieuw mechanisch sleepladen-orgel met een radiaal concaaf pedaalklavier voor de pas gebouwde Union Chapel in London (Islington) Middlesex. Het is in 1946 gerestaureerd door Monk & Gunther en in 2012 door Harrison & Harrison. Het orgel staat in een orgelkamer achter een gietijzeren rooster.
Dispositie:
| Pedal | C – f1 | |||
| 1 | Open Diapason Wood | 16 | ||
| 2 | Open Diapason Metal | 16 | ||
| 3 | Bourdon | 16 | ||
| 4 | Principal | 8 | ||
| 5 | Ophicleide | 16 | 12″ | |
| Choir | C – a3 Enclosed | |||
| 6 | Lieblich Gedact | 8 | ||
| 7 | Claribel Flute | 8 | grooved to Lieblich Gedact | |
| 8 | Dulciana | 8 | ||
| 9 | Viol d’Amore | 8 | sic | |
| 10 | Concert Flute | 4 | ||
| 11 | Lieblich Flöte | 4 | ||
| 12 | Piccolo | 2 | ||
| 13 | Corno di Bassetto | 8 | ||
| 14 | Tremulant | |||
| Great | C – a3 | |||
| 15 | Double Open Diapason | 16 | stopped bass | |
| 16 | Open Diapason | 8 | ||
| 17 | Stopped Diapason | 8 | ||
| 18 | Claribel Flute | 8 | grooved to Stopped Diapason | |
| 19 | Flauto Dolce | 8 | ||
| 20 | Principal | 4 | ||
| 21 | Flute Harmonique | 4 | ||
| 22 | Twelfth | 3 | ||
| 23 | Fifteenth | 2 | ||
| 24 | Mixture | III | 17.19.22 | |
| 25 | Trumpet | 8 | ||
| 26 | Clarion | 4 | ||
| Swell | C – a3 Enclosed | |||
| 27 | Contra Gamba | 16 | stopped bass | |
| 28 | Open Diapason | 8 | ||
| 29 | Lieblich Gedact | 8 | ||
| 30 | Salcional | 8 | sic | |
| 31 | Vox Angelica | 8 | ||
| 32 | Gemshorn | 4 | ||
| 33 | Lieblich Flote | 4 | ||
| 34 | Mixture | III | 17.19.22 | |
| 35 | Trumpet | 8 | ||
| 36 | Oboe | 8 | ||
| 37 | Vox Humana | 8 | ||
| 38 | Clarion | 4 | ||
| 39 | Tremulant | |||
Couplers:
Swell to Pedal
Swell to Great
Choir to Great
Choir to Pedal
Great to Pedal
Accessories:
4 composition pedals Great, 4 Swell
Gt-Pd toe pedal (rhs at right-angles to pedalboard)
2 balanced Swell pedals, LH to Swell, RH to Choir