which college did he attend?
Royal College of Music.
Benjamin Britten
 He remained there for two years and in 1930, he won a composition scholarship at the Royal College of Music (RCM) in London;
who is benjamin britten? An English composer, conductor, and pianist. when was he born? on 22 November 1913. where did he study? Gresham's School.
wiki:13398025
Benjamin Britten [SEP] Public school and Royal College of Music
In September 1928 Britten went as a boarder to Gresham's School, in Holt, Norfolk. At the time he felt unhappy there, even writing in his diary of contemplating suicide or running away: he hated being separated from his family, most particularly from his mother; he despised the music master; and he was shocked at the prevalence of bullying, though he was not the target of it. He remained there for two years and in 1930, he won a composition scholarship at the Royal College of Music (RCM) in London; his examiners were the composers John Ireland and Ralph Vaughan Williams and the college's harmony and counterpoint teacher, S P Waddington.