The Pursuit of Laughter is a 2008 collection of diaries, articles, reviews and portraits by Diana Mitford.
 The book was published by Gibson Square and edited by Martin Rynja.
 Mitford's sister, Deborah Cavendish, Duchess of Devonshire, provides the introduction.
 The title is a homage to another Mitford sister's book, Nancy Mitford's "The Pursuit of Love".
Love in a Cold Climate is a British television serial drama produced by the BBC in association with WGBH Boston, and first broadcast in two parts on BBC One on 4 and 11 February 2001.
 The serial was adapted by Deborah Moggach from Nancy Mitford's novels "The Pursuit of Love" and "Love in a Cold Climate", and was directed by Tom Hooper.
The Pursuit is the fifth studio album by Jamie Cullum.
 It was released on 9 November 2009 in the United Kingdom, and released in the United States and Canada on 2 March 2010.
 It was produced by Greg Wells and Martin Terefe, and mixed by Gregg Wells, Thomas Juth and Ryan Hewitt.
 The album's title is taken from the novel "The Pursuit of Love" by Nancy Mitford.
 The album was recorded at a Los Angeles studio using songs that Cullum originally recorded at his Shepherd's Bush recording studio, Terrified Studios.
 The song "Mixtape" features Sophie Dahl on backing vocals.
Wigs on the Green is a novel by Nancy Mitford, first published in 1935.
 A merciless satire of British Fascism, the book is notable for lampooning the political enthusiasms of Mitford's sisters Unity Mitford and Diana Mosley.
 2010 saw its first reprint in the United Kingdom and the United States in more than thirty-five years.
Noblesse Oblige: An Enquiry Into the Identifiable Characteristics of the English Aristocracy (1956) is a book that purports to be edited by Nancy Mitford, illustrated by Osbert Lancaster, caricaturist of English manners, and published by Hamish Hamilton.
 The anthology comprises four brief essays by Nancy Mitford, Alan S. C. Ross, “Strix” and Christopher Sykes, a letter by Evelyn Waugh, and a poem by John Betjeman.
Vikram Seth {'1': ", '2': ", '3': 'CBE', '4': "} ( ; born June 20, 1952) is an Indian novelist and poet.
 He has written several novels and poetry books.
 He has received several awards including Padma Shri, Sahitya Akademi Award, Pravasi Bharatiya Samman, WH Smith Literary Award and Crossword Book Award.
 Seth's collections of poetry such as "Mappings" and "Beastly Tales" are notable contributions to the Indian English language poetry canon.
A Suitable Girl is an upcoming novel by Vikram Seth, which is a sequel to his 1993 book "A Suitable Boy".
 Seth has stated that the book will be set in the present, rather than in 1952 where "A Suitable Boy" finished, and will therefore be what Seth calls a "jump sequel".
Nancy Freeman-Mitford {'1': ", '2': ", '3': ", '4': "} (28 November 1904 – 30 June 1973), known as Nancy Mitford, was an English novelist, biographer and journalist.
 One of the renowned Mitford sisters and one of the "Bright Young People" on the London social scene in the inter-war years, she is best remembered for her novels about upper-class life in England and France and for her sharp and often provocative wit.
 She also established a reputation for herself as a writer of popular historical biographies.
A Life of Contrasts is an international bestseller by Diana Mitford (sister of novelist Nancy Mitford, journalist Jessica Mitford, and memoirist Deborah, Duchess of Devonshire) that was first published by Hamish Hamilton in 1977.
 She later released a revised edition of the book, published in 2002 by Gibson Square.
Don't Tell Alfred is a novel by Nancy Mitford, first published in 1960 by Hamish Hamilton.
 It is the third in a trilogy centered on an upper-class English family, and takes place twenty years after the events of "The Pursuit of Love" and "Love in a Cold Climate".

Question: Vikram Seth and Nancy Mitford, have which mutual occupation?
Answer: novelist