c. May - Socialist composer Rutland Boughton stages a performance of his Nativity opera Bethlehem (1915) at Church House, Westminster, in a staging explicitly referencing the 1926 United Kingdom general strike.
6 May - In the midst of the General Strike, a concert of Leos Janácek's work is held at the Wigmore Hall, attended by the composer himself.
8 December - The premiere of Dame Ethel Smyth's Sonata in A minor for cello and piano is held in London, nearly 40 years after the work was composed.
14 December - The mother of teenage composer Benjamin Britten brings his work to the attention of Charles Macpherson.
17 December - Composer John Ireland marries Dorothy Phillips, thirty years his junior, at Chelsea Register Office.
26 December - Granville Bantock's incidental music for Macbeth is used for the first time, in a production at the Prince Theatre, London, starring Sybil Thorndike.
Operatic baritone Leslie Rands marries his D'Oyly Carte co-star Marjorie Eyre.
Eugène Goossens, fils, joins the British National Opera Company as a conductor.
Sir Walford Davies resigns his professorship at University College, Aberystwyth.
Eric Coates - "By The Tamarisk"
Arnold Bax - Symphony No. 2 in E minor and C major
John Ireland - Three Songs, 1926
Ralph Vaughan Williams
On Christmas Night (ballet)
Piano Concerto in C (movements 1 and 2)
Six Studies in English Folk Song
Gerald Tyrwhitt - The Triumph of Neptune (ballet)
Peter Warlock - Capriol Suite
Ernest Bryson - The Leper’s Flute, with libretto by Ian Colvin
May - Yvonne by Percy Greenbank, Jean Gilbert and Vernon Dukelsky, opens at Daly's Theatre, London.
3 January - Sir George Martin, record producer
21 January - Brian Brockless, organist, composer, and conductor (died 1995)
11 February - Alexander Gibson, conductor and founder of the Scottish Opera (died 1995)
20 February – Gillian Lynne, choreographer
14 March - Lita Roza, singer (died 2006)
May — Duncan Campbell, trumpeter
2 July - Morag Beaton, operatic soprano (died 2010)
18 July - Bryan Johnson, singer (died 1995)
17 August – George Melly, jazz singer (died 2007)
17 November - Robert Earl, singer
30 December - Stan Tracey, jazz pianist and composer (died 2013)
8 June - John Hornsey Casson, hymn-tune composer, 82
12 July - Charles Wood, composer, 60
4 November - Robert Newman, co-founder of the Proms, 68
1926 in British music Wikipedia
This is a summary of 1926 in music in the United Kingdom.