At Oxford, he co-founded the Oxford Literary Society and ran its Poetry Workshop in the 1970s. His poems appeared in Oxford Poetry Now, along with work by WH Auden, Anne Stevenson, Ruth Padel, and others.
Publication was not pursued during his career in the commercial sphere, but more recently his poems have appeared in Acumen, a UK magazine, Voices, and in LOGOS, the magazine of the Episcopal Diocese of West Texas.
Morrison has been praised for having a very distinctive voice, quite different from so much that emerges out of modern American MFA courses. It differs both as a poetry of Ideas and for its use of form and sound.
Early influences were mostly the Modernists, Pound, Eliot, and Wallace Stevens. Later years have seen the influence of Larkin, Heaney and Robert Browning come to the fore, the latter both for his use of ordinary, conversational, speech and for his playful, even mischievous use of rhyme.