Benjamin Britten is one most important British composers from the second half of the twentieth century. Remarkably, he focused on opera, a dying genre, at least in its current form. Britten's contributions however, among which Peter Grimes, The Rape of Lucretia, Gloriana, The Turn of the Screw, and Death in Venice, managed to remain core repertoire for opera companies to this day. Many of these productions included a role for his artistic partner and life companion Peter Pears. Britten also wrote a number of lieder for this tenor, among which his Serenade for tenor, horn and string orchestra. Yet, Britten excelled in many more genres. He wasn't even 20 years old when he composed his brilliant Phantasy for hobo quartet and his friendship with the legendary cellist Rostropovich led to a Cello sonata, three Suites for cello solo and a Symphony for Cello and orchestra in the 1960s.

Britten never became Master of the Queen's Music, yet he surely had feeling for public sentiments. For example, as a pacifist, he taught his people about world peace through his War Requiem from 1962. Britten was an excellent interpreter of his own work, just like Bartók and Stravinsky. Many of his recordings have been matched, but never exceeded.

Ralph Vaughan Williams was an English composer and folk song collector. His works include operas, ballets, chamber music, secular and religious vocal pieces and orchestral compositions including nine symphonies, written over nearly fifty years. Strongly influenced by Tudor music and English folk-song, his output marked a decisive break in British music from its German-dominated style of the 19th century.
He wrote many works for amateur and student performance. He was musically a late developer, not finding his true voice until his late thirties; his studies in 1907–08 with the French composer Maurice Ravel helped him clarify the textures of his music.
Vaughan Williams is among the best-known British symphonists, noted for his very wide range of moods, from stormy and impassioned to tranquil, from mysterious to exuberant. Among the most familiar of his other concert works are Fantasia on a Theme by Thomas Tallis (1910) and The Lark Ascending (1914). His vocal works include hymns, folk-song arrangements and large-scale choral pieces. He wrote eight works for stage performance between 1919 and 1951. Although none of his operas became popular repertoire pieces, his ballet Job: A Masque for Dancing (1930) was successful and has been frequently staged.

Gustav Holst is a composer nobody seems to know, evne though everyone knows The Planets. This lack of relative fame is a mystery, because the quality of his works for choir and orchestra (including some amazing works for brass orchestra) is often high. Perhaps this can be explained by his aversion to public appearance. After the succes of The Planets he focused on more introvert topics, which resulted among others in his beautiful Hymn of Jesus from 1917. This is typically a work which upon first listening makes you wonder why it's not better known (even though allegedly the work was quite succesful during its own time). There is, however, also something up with the continuity of Holst as a composer, as if technical challenges stimulated him more than creating a consistent style. Grove music Online quoted Holst's daughter Imogen regarding this remarkable phenomenon: 'As soon as he made his point, he stopped'.

Herbert Howells studied at the Royal College of Music, London, with Stanford and Wood and taught there himself from 1920 until 1979. He succeeded Holst at the St. Paul’s Girls School and had a professorship at the London University. His music is clearly in the British diatonic tradition, with connections towards Elgar, Walton and Vaughan Williams.
Amongst his early works are two piano concertos and chamber music, but his oeuvre mainly consists of choral works, including 15 anthems, a concert requiem (Hymnus paradisi from 1938, first performed in 1950), masses, motets, and several songs. Deeply rooted in the English choral tradition, Howells’ work demonstrates great, precious craftsmanship and a modest, very eloquent personality.
(Source:Musicalifeiten.nl)