This is a summary of 1925 in music in the United Kingdom.

• 3 April – Gustav Holst's opera At the Boar's Head is premiered in Manchester.
• date unknown
  • After a spell of ill-health, Gustav Holst returns to teach at St Paul's Girls' School.^[1]
  • William Walton dedicates the score of his Portsmouth Point to his patron Siegfried Sassoon, who had recommended it be published by Oxford University Press.^[2]

• Mai Jones – "Blackbirds"^[3]

• Frank Bridge –
  • "Golden Hair", for voice and piano
  • "Journey's End", for tenor or high baritone and piano
  • The Pneu World, for cello and piano
  • Songs of Rabindranath Tagore (3), for voice and piano, or voice and orchestra
  • Vignettes de Marseille, for piano
  • Winter Pastorale, for piano
• Eric Coates – 2 Light Syncopated Pieces^[4]
• Walford Davies – Men and Angels, for chorus and orchestra, Op. 51
• Frederick Delius – A Late Lark, for voice and orchestra
• Edward Elgar –
  • "The Herald", part-song
  • "The Prince of Sleep", part-song
• Gustav Holst –
  • "God Is Love, His the Care", for choir
  • Hymns (4) for Songs of Praise, for choir
  • Motets (2), for choir
  • Ode to C.K.S. and the Oriana, for choir
  • Terzetto for flute, oboe and viola
• Herbert Howells – Piano Concerto No. 2
• John Ireland – Two Pieces for Piano (1925)
• Ernest John Moeran – Bank Holiday
• Ralph Vaughan Williams –
  • Concerto Accademico for violin and strings
  • Flos Campi, for viola, wordless choir, and small orchestra
  • Hymns (5) for Songs of Praise, for choir
  • Two Poems by Seumas O'Sullivan, for voice and piano
  • Three Songs from Shakespeare, for voice and piano
  • Three Poems by Walt Whitman, for baritone and piano
• William Walton – Portsmouth Point, concert overture
• Peter Warlock – "A Prayer to St Anthony"

• Armstrong Gibbs – Blue Peter
• Gustav Holst – At the Boar's Head

• Betty in Mayfair, with music by Harold Fraser-Simson and lyrics by Harry Graham^[5]
• Charlot's Revue of 1925^[6]
• Dear Little Billie, with music by H.B. Hedley & Jack Strachey and lyrics by Desmond Carter^[5]
• Love's Prisoner with music, book and lyrics by Reginald Hargreaves^[5]
• On with the Dance, written and composed by Noël Coward and Philip Braham^[7]

• William Wallace – Richard Wagner as he lived

• 17 February – Ron Goodwin, film composer (d. 2003)
• 8 March – Dennis Lotis, South African-born singer^[8] (d. 2023)
• 22 March – Gerard Hoffnung, cartoonist, comedian, musician (d. 1959)
• 23 March – Monica Sinclair, operatic contralto (d. 2002)
• 18 June – Johnny Pearson, composer, orchestra leader and pianist (d. 2011)
• 16 July - Johnny Brandon, singer-songwriter (d. 2017)
• 2 September – Russ Conway, pianist (d. 2000)
• 20 September – James Bernard, film composer (d. 2001)
• 1 October – Alan Styler, operatic baritone (d. 1970)
• 11 October – David Hughes, operatic tenor (d. 1972)
• 31 December – Daphne Oram, composer and electronic musician (d. 2003)^[9]

• 1 March - Thomas Bidgood, conductor, composer and arranger, 66 (suicide)^[10]
• 22 March – Marie Brema, concert mezzo-soprano, 69
• 1 April - Francis William Davenport, composer and music writer^[11]
• 13 November – Edward Frank Lambert, composer (born 1868)^[12]

• 1925 in the United Kingdom
• List of British films of 1925