Question: Who wrote the movie that Philip Hill-Pearson and David Tennant collaborated on?

full_context: Document 1: United (2011 film): United is a British television film directed by James Strong and written by Chris Chibnall. It is based on the true story of Manchester United's "Busby Babes" and the aftermath of the 1958 Munich air disaster, with the film's events taking place between August 1956 and May 1958. In particular, the film focuses on the experiences of assistant manager Jimmy Murphy, played by David Tennant, and Bobby Charlton, played by Jack O'Connell.
Document 2: Jeremy Irvine: Jeremy William Fredric Smith (born 18 June 1990), better known as Jeremy Irvine, is an English actor who made his film debut in the epic war film "War Horse" (2011). In 2012, he portrayed Philip "Pip" Pirrip in the film adaptation of "Great Expectations", and earned widespread critical acclaim for his role in the independent film "Now Is Good" (2012).
Document 3: Billy Howle: Billy Howle (born November 9, 1989) is an actor, known for his work as James Warwick on the E4 television series, "Glue". He has since co-starred in the film, "The Sense of an Ending" (as the younger version of Jim Broadbent's lead character) and the miniseries "The Witness for the Prosecution" in the pivotal role of defendant, Leonard Vole. He also appeared in "Dunkirk". Howle will next be seen opposite Saoirse Ronan in the drama, "On Chesil Beach", in the adaptation of Anton Chekhov's iconic play, "The Seagull", and in Netflix film "Outlaw King".
Document 4: Best (film): Best is a 2000 British film portraying the football career of the Northern Irish soccer star George Best, particularly his years spent at Manchester United. It was directed by Mary McGuckian.
Document 5: Javone Prince: Javone Prince is a British comedian and actor. He has appeared in many British comedy television shows, such as "Horrible Histories", "Sorry, I've Got No Head" and "Little Miss Jocelyn", but is best known for starring as Jerwayne in "PhoneShop". The pilot episode of "PhoneShop" was script edited by Ricky Gervais. Prince later had a minor role in Gervais's sitcom "Life's Too Short". Prince also appears in several theatre productions including; "Measure for Measure", "Titus Andronicus" and "Richard III". He trained at LAMDA and is currently a member of the National Theatre.
Document 6: James Gillan (actor): James Gillan (born James Gillan Paterson) is a Scottish stage actor born in Glasgow, and trained at The Arts Educational Schools in London.
Document 7: 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.
Document 8: James Hillier (actor): James Hillier, (born 22 September 1973 in Kent, England is a British actor and director. In theatre and on screen he has appeared in numerous roles. Most recently as the Queens Equerry in Season 1 & 2 of the Netflix series The Crown (TV series) and on stage at the Royal Court Theatre in Torn. He also played Sergeant Christian Young on the BBC police drama," HolbyBlue", and Damian, Roxy Mitchell's fiancé in BBC1 Soap Opera EastEnders.
Document 9: Werner Daehn: Werner Daehn (born 14 October 1967) is a German actor with an international reputation, who has worked with Vin Diesel and Samuel L. Jackson in "XXX", with Jason Priestley in "Colditz" an ITV1 2005 miniseries, with Bill Pullman in "Revelations" and with Steven Seagal in "Shadow Man". In addition he has also worked in German productions like "Stauffenberg - Rebellion of Conscience" (also titled "Valkeryie" on the German DVD) and "" (nominated in Germany for the ). He appears momentarily in the film "The Lives of Others" by Florian Henckel von Donnersmarck. He also took part in a British production for the BBC, when in 2011 he played the role of Dr Georg Maurer, the German doctor who treated the Manchester United players who survived the 1958 Munich air disaster. In 2016, he played the role of Josef Von Zimmerman, in Game of Aces.
Document 10: Joe Armstrong (football scout): Joe Armstrong (1894–1975) succeeded Louis Rocca as chief scout of Manchester United after World War II. At United, Armstrong worked very closely alongside reserve team manager and follow scout, Jimmy Murphy, and the youth players that made their debut from the early 1950s onwards are a tribute to their scouting skills.
Document 11: Believe (2013 film): Believe is a 2013 British sports drama film directed by David Scheinmann. Set in Manchester in 1984, it stars Brian Cox as legendary manager, Sir Matt Busby, who comes out of retirement to coach a team of young working class boys captained by the talented but unruly Georgie Gallagher (played by Jack Smith). The film also stars Natascha McElhone as Erica Gallagher, Anne Reid as Jean Busby and Toby Stephens as Georgie's prospective headmaster.
Document 12: Duncan Edwards: Duncan Edwards (1 October 1936 – 21 February 1958) was an English footballer who played for Manchester United and the England national team. He was one of the Busby Babes, the young United team formed under manager Matt Busby in the mid-1950s, and one of eight players who died as a result of the Munich air disaster.
Document 13: Leeds United (BBC play): Leeds United is a 1974 filmed television play written by Colin Welland and directed by Roy Battersby. It was shown on 31 October 1974 on BBC 1 as the first episode of the fifth "Play for Today" series.
Document 14: Anthony Hopkins: Sir Philip Anthony Hopkins (born 31 December 1937) is a Welsh film, stage, and television actor. After graduating from the Royal Welsh College of Music & Drama in 1957, he trained at the Royal Academy of Dramatic Art in London, and was then spotted by Laurence Olivier who invited him to join the Royal National Theatre. In 1968, he got his break in film in "The Lion in Winter", playing Richard the Lionheart.
Document 15: Philip Hill-Pearson: Philip Hill-Pearson is a British actor. He trained at East 15 Acting School, graduating in 2009. Shortly after graduating from the drama school, he was cast as Bruce Donnelly in the comedy drama series "Shameless". Following on from this, he went on to work in a range of differing television programs, including Good Cop and Doctors, and also films such as United, with David Tennant, and Steven Spielberg's adaptation of Michael Morpurgo's War Horse. Alongside his extensive work in British film and television, Pearson also worked with the Hull Truck Theatre on their stage production of The Rise and Fall of Little Voice in 2011, playing the role of Billy.
ground_truth: Chris Chibnall