The organ at Holy Trinity Church in Hull is said to be the largest instrument to be found in a British parish church.  It is a combination of the work of two companies - Forster and Andrews and of course - the John Compton Organ Company Ltd.

Some pipework in the organ dates back to the mid 18th century when a 2 manual instrument was first installed. In 1845 the organ was rebuilt and enlarged by Forster and Andrews who also rebuilt the organ in 1855, 1876, 1900 and 1908. The organist Norman Strafford always felt that the organ was now powerful enough for the huge church so in 1938 the organ was totally rebuilt by Compton Electric action and detached console featuring the Compton patent luminous stop control were added along with much new pipework including a very powerful Tuba stop and the Compton patent 32ft polyphonic bass. 

The specification reads:


PEDAL
Sub Bass 32'
Dulciana 16'
Open Wood 16'
Open Metal 16'
Bourdon 16'
Echo Bourdon 16'
Violone 16'
Contra Bass 16'
Quint 10.2/3'
Octave Wood 8'
Principal 8'
Flute 8'
Dolce 8'
Prestant 4'
Flute 4'
Quint 5.1/3'
Fourniture VI
Contra Trombone 32'
Posaune 16'
Bass Clarinet 16'
Fagotto 16'
Bombarde 16'
Trombone 16'
Trumpet 8'
Bassoon 8'
Clarinet 8'
Choir to Pedal
Great to Pedal
Swell to Pedal
Swell Octave to Pedal
Solo to Pedal
Solo Octave to Pedal
Octave

CHOIR
Bourdon 16'
Double Dulciana 16'
Bell Gamba 8'
Open Diapason 8'
Lieblich Gedeckt 8'
Dulciana 8'
Lieblich Flute 4'
Dulcet 4'
Gemshorn 4'
Nazard 2.2/3'
Twelfth 2.2/3'
Fifteenth 2'
Piccolo 2'
Tierce 1.3/5'
Acuta II
Contra Fagotto 16'
Fagotto 8'
Clarinet 4
Swell to Choir
Solo to Choir
Tremulant

GREAT
Bourdon 16'
First Diapason 8'
Second Diapason 8'
Third Diapason 8'
Gamba 8'
Harmonic Claribel 8'
Stopped Diapason 8'
Dulciana 8'
Quint 5.1/3'
Octave 4'
Principal 4'
Waldflote 4'
Dulcet 4'
Twelfth 2.2/3'
Fifteenth 2'
Super Octave 2'
Mixture III
Cymbale II
Contra Posaune 16'
Tromba 8'
Posaune 8'
Clarion 4'
Choir to Great
Swell to Great
Solo to Great

SWELL
Bourdon 16'
Viola da Gamba 8'
Geigen 8'
Rohrflote 8'
Salicional 8'
Voix Celeste 8'
Vox Angelica 8'
Geigen Octave 4'
Hohl Flote 4'
Fifteenth 2'
Mixture IV
Sesquiltera II
Contra Fagotto 16'
Fagotto 8'
Trumpet 8'
Hautboy 8'
Horn 8'
Clarion 4'
Sub Octave
Unison Off
Octave
Solo to Swell
Tremulant to Flues
Tremulant to Reeds

SOLO
Viole d' Orchestre 8'
Clarabella 8'
Viole Celeste 8'
Concert Flute 4'
Orchestral Oboe 8'
Double Clarinet 8'
Clarinet 8'
Vox Humana 8'
Tuba 8'
Tuba Clarion 4'
Sub Octave
Unison Off
Octave
Tremulant (to light wind)

BOMBARDE (played on choir manual)
Double Diapason 16'
Diapason 8'
Octave 4'
Fourniture IV
Cymbale IV
Contra Posaune 16'
Tuba 8'
Posaune 8'
Tuba Clarion 4'

ACCESSORIES
10 thumb pistons to Choir
10 thumb pistons to Great 
10 thumb pistons to Swell 
8 thumb pistons to Solo 
4 general thumb pistons
6 toe pistons to Pedal
6 toe pistons to Great
6 toe pistons to Swell
4 pedal coupler canceller thumb pistons
2 toe piston sustainers - choir and solo
1 general cancel thumb piston
1 balanced expression pedal - swell
1 balanced expression pedal - solo
1 balanced expression pedal - general crescendo
12 ventil switches
Voltmeter