In the 1970s, Niven wrote the first of several books. His 1978 study, D. H. Lawrence: The Novels, was reviewed as "an excellent introduction to Lawrence as an artist and as a thinker", and as "particularly useful for its full treatment of the neglected or downgraded novels". Niven's 1980 book, D. H. Lawrence: The Writer and His Work was reviewed in The Los Angeles Times Book Review as "a brief yet substantial commentary on the Lawrence work," though with "few fresh insights." The review noted that Niven "does focus some welcome attention on several less-lauded works," and that Niven's "defense of Lawrence's underrated plays should interest any serious Lawrence scholar." Niven was Director General of The Africa Centre from 1978 to 1984. He was at various times "an executive member of the Association for Commonwealth Literature and Language Studies and a member of the Commonwealth Institute Working Party on Library Holdings of Commonwealth Literature". In 2000–2001 he served on the International Advisory Board of the Raja Rao Award for Literature. He was Principal of the King George VI and Queen Elizabeth Foundation of St. Catherine at Cumberland Lodge in Windsor from 2001 to 2013, and "held the unique double of being Director of Literature at the Arts Council of Great Britain for 10 years and Director of Literature at the British Council for four." He was president of English PEN from 2003 to 2007, and Chairman of the Commonwealth Writers' Prize. Niven was made a Lieutenant of the Royal Victorian Order in the 2012 Birthday Honours. He was a jury member for the 2012 DSC Prize for South Asian Literature.
Booker Prize work and later activities
He was a judge for the Booker Prize in 1994, and for the Man Booker Prize in 2014. In 2017, Niven argued that allowing American authors to contend for the Booker award would not lead to American dominance, pointing to authors from other countries having won recent international literary awards. The following year, he opposed efforts to drop American authors from contention for the Booker Prize. In support of the wide international eligibility of applicants, he described "the development of the English language into a number of different Englishes, which can then be compared and contrasted" as "one of the unifying features of the literature." In 2019, he supported a fundraiser to preserve an antique annotated copy of D.H. Lawrence's Lady Chatterley's Lover used as an exhibit in the famous obscenity trial, R v Penguin Books Ltd. Having written two books about Lawrence, Niven commented, "He has served me well and the least I can do now is help in his hour of need."
Publications
In addition to his books, Niven "is the author of over fifty articles on aspects of Commonwealth and post-colonial literature, and has also written extensively about the welfare of overseas students".
The Commonwealth Writer Overseas
D. H. Lawrence: The Novels
The Yoke of Pity: A Study in the Fictional Writings of Mulk Raj Anand