February – Release of Shirley Bassey's first single, Burn My Candle (At Both Ends).
8 May - Benjamin Britten's opera Gloriana, written in 1953, is given its US première in Cincinnati, in concert form, conducted by Josef Krips.
14 May - Ralph Vaughan Williams's Symphony No. 8 receives its first London performance.
June - Arthur Bliss heads the first delegation by British musicians to the Soviet Union since the end of the Second World War. The party included the violinist Alfredo Campoli, the oboist Léon Goossens, the soprano Jennifer Vyvyan and the pianist Gerald Moore.
13 November – The first of a series of Hoffnung Music Festival Concerts takes place at the Royal Festival Hall, in London.
28 November – Yoko Ono, recently divorced from Japanese composer Toshi Ichiyanagi, marries Anthony Cox.
31 December - Flanders and Swann launch their two-man revue At the Drop of a Hat.
See UK No.1 Hits of 1956
Arthur Bliss –
Edinburgh Overture, for orchestra
Seek the Lord (anthem), SATB choir and organ
Reginald Smith Brindle – El Polifemo de Oro
Benjamin Britten –
Antiphon, Op. 56b, for SATB choir and organ
The Prince of the Pagodas, Op. 57 (ballet in three acts)
Peter Maxwell Davies – Sonata for Clarinet and Piano
Stephen Dodgson - Concerto No. 1 for Guitar and Orchestra
Cecil Armstrong Gibbs – Threnody
Concerto No. 2 for Oboe and Orchestra
Sextet for Piano and Wind Quintet
Trio for Violin, Cello, and Piano
Variations on "Annie Laurie", for two piccolos, two contrabass clarinets, heckelphone, two contrabassoons, serpent, contrabass serpent, subcontrabass tuba, harmonium, and hurdy-gurdy
Michael Tippett –
Bonny at Morn (arr. of Northumbrian folksong), unison choir and three recorders
Songs from the British Isles (4), SATB choir
Ralph Vaughan Williams –
A Choral Flourish (text from the Psalms), for SATB choir, two trumpets, and organ
God Bless the Master of This House, for SATB choir
Preludes on Welsh Folksongs (2), for organ
Symphony No. 8
A Vision of Aeroplanes (text: N. Ezekiel), motet for SATB choir and organ
William Walton – Cello Concerto
Malcolm Arnold – The Open Window, Op. 56 (opera in one act, libretto by S. Gilliat, after Saki),
Malcolm Arnold - 1984, starring Edmond O'Brien, Donald Pleasence, Jan Sterling and Michael Redgrave.
Brian Easdale - The Battle of the River Plate by director-writer team of Michael Powell and Emeric Pressburger, starring John Gregson, Anthony Quayle and Peter Finch.
Edward Williams - Doublecross directed by Anthony Squire, starring Donald Houston, Fay Compton and William Hartnell.
Grab Me a Gondola by James Gilbert and Julien More, starring Denis Quilley
The Good Companions, starring Eric Portman
It's a Wonderful World, starring George Cole and featuring Ted Heath and Dennis Lotis
It's Great to Be Young, starring John Mills and Cecil Parker
Stars in Your Eyes, starring Nat Jackley and Patricia Kirkwood
A Touch of the Sun, starring Frankie Howerd, Ruby Murray and Dennis Price
17 January – Paul Young, singer
25 January – Andy Cox (The Beat, Fine Young Cannibals)
31 January – Johnny Rotten, singer (Sex Pistols)
12 February – Brian Robertson, Scottish guitarist and songwriter (Thin Lizzy, Motörhead, and Wild Horses)
13 February – Peter Hook, singer and bass player (Joy Division, New Order, Freebass, Revenge, and Monaco)
3 June - Lynne Dawson, operatic soprano
Terry Chimes, drummer (The Clash, Generation X, Hanoi Rocks, and Cowboys International)
Billy Jenkins, guitarist and composer (Voice of God Collective)
15 July – Ian Curtis, vocalist (Joy Division) (died 1980))
19 July –Nikki Sudden, English singer-songwriter and guitarist (Jacobites and Swell Maps) (d. 2006)
Paul Cook, English drummer (Sex Pistols, The Professionals, Chiefs of Relief, and Man Raze)
Michael Gordon, American composer
27 August – Glen Matlock, guitarist (Sex Pistols)
12 September - B. A. Robertson, singer-songwriter
27 October - Hazell Dean, singer
17 November - Philip Grange, composer
15 December - William Cauty, composter
19 December - Jimmy Cauty, artist and musician
28 December – Nigel Kennedy, violinist
16 March – Joseph John Richards, conductor, composer and music teacher, 77
9 April - Jack Little, composer, actor, singer and songwriter
16 May - Orlando Morgan, music teacher, composer and musicologist, 91
18 July - Violet Loraine, musical theatre star, 69
6 September - Felix Borowski, British/American composer and teacher, 84
27 September – Gerald Finzi, composer, 55 ("severe brain inflammation")
18 October - Harry Parry, jazz clarinetist and bandleader, 44
8 December - Edgar Bainton, church music composer, 76
9 December - Ethel Scarborough, pianist and composer, 76
date unknown - George Oldroyd, organist and composer
Best Song Musically and Lyrically - Mátyás Seiber & Norman Newell, "By the Fountains of Rome"
1956 in British music Wikipedia
This is a summary of 1956 in music in the United Kingdom, including the official charts from that year.