Question: John Mathieson had a peer in the creator of what 2007 British war drama?

Context paragraphs:
Jamie Mathieson: Jamie Mathieson is a British television writer.  A former stand-up comedian, he has written for a number of UK science fiction TV shows, namely "Being Human", "Dirk Gently", and for series 8, 9 and 10 of "Doctor Who".  He also scripted the 2009 film "Frequently Asked Questions About Time Travel".  He wrote the drama pilot "ALT" for Channel 4 in 2014.  It was announced in October 2014 that Mathieson will be the lead writer of French science fiction series "Métal Hurlant: Origins," a sequel to "Métal Hurlant Chronicles", which is currently in development.

Flare Technology: Flare Technology was a computer hardware company based in Cambridge, United Kingdom.  It was founded in 1986 by Martin Brennan, Ben Cheese, and John Mathieson, former engineers at Sinclair Research.

John Dodds (engineer): John Mathieson Dodds OBE (c. 1905 – 15 October 1983) was a Scottish electrical engineer.  He was educated at the University of Aberdeen, MA, BSc, BSc(Eng.) , and at the Technische Hochschule, Aachen, where he won a Dr Ing.  in 1933.

Robert Inglis (railway engineer): Sir Robert John Mathieson Inglis CIE MICE TD DL FRSE (1881–1962) was a Scots-born railway engineer noted for his work in Britain and India and his reorganisation of the railways in post-war Germany.

John Mathieson (cinematographer): John Mathieson, BSC (born 3 May 1961) is an English cinematographer.  He is one of a group of film makers who emerged from the music video industry of the late 1980s and 1990s.  His peers include cinematographers Tim Maurice Jones ("Lock Stock and Two Smoking Barrels") and Seamus McGarvey BSC ("Atonement") and directors Michel Gondry and David Fincher.  The inventiveness and visual style of music videos did much to shape the evolution of contemporary feature films.

Two Worlds (1930 British film): Two Worlds is a 1930 British war drama film directed by Ewald André Dupont and starring Norah Baring, John Longden and Donald Calthrop.  It was made at Elstree Studios by British International Pictures.  It was made as an MLV, with a separate German-language version "Zwei Welten" and the French "Les deux mondes".

John Mathieson (computer scientist): John Mathieson is a Computer Science graduate who initially worked for Sinclair Research before going on to found Flare with fellow ex-Sinclair colleagues Martin Brennan and Ben Cheese.

Atonement (film): Atonement is a 2007 British romantic war drama film directed by Joe Wright and based on Ian McEwan's 2001 novel of the same name.  The film stars James McAvoy, Keira Knightley, Saoirse Ronan, Romola Garai and Vanessa Redgrave, and chronicles a crime and its consequences over the course of six decades, beginning in the 1930s.  It was produced by Working Title Films and filmed in England.  Distributed in most of the world by Universal Studios, it was released in the United Kingdom and Ireland on 7 September 2007 and in North America on 7 December 2007.

War Horse (film): War Horse is a 2011 British war drama film directed and co-produced by Steven Spielberg from a screenplay written by Lee Hall and Richard Curtis, adapted from English author Michael Morpurgo's 1982 novel of the same name.  The film's cast includes Jeremy Irvine (in his film acting debut), Emily Watson, David Thewlis, Tom Hiddleston, Benedict Cumberbatch, Eddie Marsan, Niels Arestrup, Toby Kebbell, David Kross and Peter Mullan.  Set before and during World War I, it tells of the journey of Joey, a bay Thoroughbred horse raised by British teenager Albert (Irvine), as he is bought by the British Army, leading him to encounter numerous individuals and owners throughout Europe, all the while experiencing the tragedies of the war happening around him.

John Mathieson (surveyor): John Mathieson FRSE FRSGS (1855, Durness, Sutherland – 14 June 1945, Edinburgh) was a Scottish surveyor, cartographer, explorer and Gaelic scholar.

Supporting paragraphs: John Mathieson (cinematographer) Atonement (film)
Answer: Atonement