The pipe organ is a musical instrument that produces sound by driving pressurised air through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ranks, each of which has a common timbre, volume, and construction throughout the keyboard compass. Most organs have many ranks of pipes of differing pitch, timbre, and volume that the player can employ singly or in combination through the use of controls called stops.
Henry Willis & Sons is a British firm of pipe organ builders founded in 1845. Although most of their installations have been in the UK, examples can be found in other countries.
Harrison & Harrison Ltd is a British company that makes and restores pipe organs, based in Durham and established in Rochdale in 1861. It is well known for its work on instruments such as King's College, Cambridge, Westminster Abbey, and the Royal Festival Hall.
N.P Mander Limited later Mander Organs Limited was an English pipe organ maker and refurbisher based in London. Although well known for many years in the organ building industry, they achieved wider notability in 2004 with the refurbishment of the Royal Albert Hall's Father Willis Grand Organ. That company filed for insolvency in 2020 with their trading name and intellectual rights being bought out by the Canterbury firm F. H Browne and Sons.
Peter Collins was an English pipe organ builder based in Melton Mowbray, Leicestershire. He specialised in tracker action organs. Collins was an advocate of computer-aided design, using it to produce compact instruments and to control material costs.
William Drake (1943–2014) was the founder of the firm of William Drake, Organ Builder, that manufactures pipe organs in Buckfastleigh, Devon, England. He held a Royal Warrant as organ builder to Queen Elizabeth II.
Frobenius is a Danish firm of organ builders.
J. W. Walker & Sons Ltd is a British firm of organ builders established in 1828 by Joseph William Walker in London. Walker organs were popular additions to churches during the Gothic Revival era of church building and restoration in Victorian Britain, and instruments built by Walker are found in many churches around the UK and in other countries. The firm continues to build organs today.
Nicholson & Co. Ltd manufactures pipe organs. It was founded in 1841 by John Nicholson. Its work encompasses the creation of new instruments as well as historical restorations, rebuilds and renovations. In 2013, the firm completed the first wholly new instrument in a British cathedral since 1962 at Llandaff Cathedral in Cardiff.
Jürgen Ahrend is a German organ builder famous for restoring instruments such as the Rysum organ and the Arp Schnitger organ in St. Jacobi, Hamburg as well as building original instruments. He is interviewed extensively in the film Martinikerk Rondeau, released in 2009.
Charles Lloyd was a pipe organ builder based in Nottingham who flourished between 1859 and 1908.
John Compton (1876–1957), born in Newton Burgoland, Leicestershire, England, was a pipe organ builder. His business based in Nottingham and London flourished between 1902 and 1965.
Forster and Andrews was a British organ building company between 1843 and 1924.
Lewis and Company was a firm of organ builders founded by Thomas Christopher Lewis (1833–1915), one of the leading organ builders of late 19th-century Britain.
Wilhelm Carl Friedrich Sauer was a German pipe organ builder. One of the famous organ builders of the Romantic period, Sauer and his company W. Sauer Orgelbau built over 1,100 organs during his lifetime, amongst them the organs at Bremen Cathedral, Leipzig's St. Thomas Church, and Berlin Cathedral, which is considered to be "his final great masterpiece".
Norman and Beard were a pipe organ manufacturer based in Norwich from 1887 to 1916.
Conacher and Co was a firm of British organ builders based in Huddersfield, West Yorkshire, England.
St James' Church Paddington, also known as St James' Church Sussex Gardens, is a Church of England parish church in Paddington, London, in the United Kingdom. It is the parish church of Paddington. It is located at the western end of Sussex Gardens, a long tree-lined avenue, about 175 metres (0.109 mi) north of Hyde Park.
Abbott and Smith were a firm of organ builders based in Leeds, England from 1869 to 1964.
St Stephen's Church is a Church of England church in Park Avenue, Bush Hill Park in the London Borough of Enfield.
