Question: Which role did Imogen Poots play in the 2007 British science fiction horror film 28 Weeks Later?

Context paragraphs:
28 Weeks Later: 28 Weeks Later is a 2007 British science fiction horror film, structured as a sequel to the critically and commercially successful 2002 film "28 Days Later".  "28 Weeks Later" was co-written and directed by Juan Carlos Fresnadillo, with Danny Boyle and Alex Garland, director and writer of "28 Days Later" respectively, now acting as executive producers.  It was released in the United Kingdom and United States on 11 May 2007.  The plot depicts the efforts of NATO military forces to salvage a safe zone in London following the events in "28 Days Later", the consequence of two young siblings thinking of no one but themselves by breaking protocol to find their infected mother, and the resulting death of all London's previously uninfected humans through the siblings' reintroduction of the highly contagious virus to the safe zone.

Imogen Poots: Imogen Poots (born June 3, 1989) is an English actress.  She played Tammy in the post-apocalyptic science fiction horror film "28 Weeks Later" (2007), Linda Keith in the Jimi Hendrix biopic "" (2013), Debbie Raymond in the Paul Raymond biopic "The Look of Love" (2013) and Julia Maddon in the American action movie "Need For Speed" (2014).  In 2016 she starred as Kelly Ann in the "Showtime" series "Roadies".

Vargo Statten Science Fiction Magazine: Vargo Statten Science Fiction Magazine (later Vargo Statten British Science Fiction Magazine, The British Science Fiction Magazine and The British Space Fiction Magazine) was a British science fiction magazine which published nineteen issues between 1954 and 1956.  It was initially published by Scion Press, with control passing to a successor company, Scion Distributors, after Scion went bankrupt in early 1954.  At the end of 1954, as part payment for a debt, Scion Distributors handed control of the magazine to Dragon Press, who continued it for another twelve issues.  E.C. Tubb and John Russell Fearn were regular contributors, and Kenneth Bulmer also published several stories in the magazine.  Barrington Bayley's first published story, "Combat's End", appeared in May 1954.  The editor was initially Alistair Paterson, but after seven issues Fearn took the helm: "Vargo Statten" was one of Fearn's aliases, and the magazine's title had been chosen because of his popularity.  Neither Paterson nor Fearn had enough of a budget to attract good quality submissions, and a printing strike in 1956 brought an end to the magazine's life.

A Long Way Down (film): A Long Way Down is a 2014 British black comedy film directed by Pascal Chaumeil, loosely based on author Nick Hornby's 2005 novel, "A Long Way Down".  It stars Pierce Brosnan, Toni Collette, Imogen Poots, and Aaron Paul as four strangers who happen to meet on the roof of a London building on New Year's Eve, each with the intent of committing suicide.  Their plans for death in solitude are ruined when they meet as they decide to come down from the roof alive — however temporary that may be.

Invasion of the Body Snatchers: Invasion of the Body Snatchers is a 1956 American science fiction horror film produced by Walter Wanger, directed by Don Siegel, that stars Kevin McCarthy and Dana Wynter.  The black and white film, shot in Superscope, was partially done in a film noir style.  Daniel Mainwaring adapted the screenplay from Jack Finney's 1954 science fiction novel "The Body Snatchers".  The film was released by Allied Artists Pictures on a double bill with the British science fiction film "The Atomic Man".

X the Unknown: X the Unknown is a British science fiction horror film made by the Hammer Film Productions company and released in 1956.  It stars Dean Jagger and Edward Chapman and was written by Jimmy Sangster.  The film was directed by Leslie Norman.  The film is significant in that "it firmly established Hammer's transition from B-movie thrillers to out-and-out horror/science fiction" and, with "The Quatermass Xperiment" (1955) and "Quatermass 2" (1957), completes "an important trilogy containing relevant allegorical threads revealing Cold War anxieties and a diminishing national identity resulting from Britain's decrease in status as a world power".

Comes a Bright Day: Comes A Bright Day is a British film.  The film was written and directed by Simon Aboud, and stars Craig Roberts, Imogen Poots, Kevin McKidd and Timothy Spall.  "Comes A Bright Day" is Aboud's directorial debut.  The film is a mix of genres: a darkly comic thriller, involving a romance set within a heist, and a story about searching for the hidden gems that make life infinitely richer.

Foundation (journal): Foundation: The International Review of Science Fiction is a critical peer-reviewed literary magazine established in 1972 that publishes articles and reviews about science fiction.  It is published triannually (spring, summer, and winter) by the Science Fiction Foundation.  "Worlds Without End" called it "the essential critical review of science fiction", whilst "The Encyclopedia of Science Fiction" has called it "perhaps the liveliest and indeed the most critical of the big three critical journals" (the others being Extrapolation (journal) and Science Fiction Studies).  A long-running feature was the series of interviews and autobiographical pieces with leading writers, entitled "The Profession of Science Fiction", a selection of which was edited and published by Macmillan Publishers in 1992.  Several issues have been themed, including #93 ("A Celebration of British Science Fiction", 2005), published also as part of the Foundation Studies in Science Fiction.  The hundredth edition (Summer 2007) was unusual in that it was an all-fiction issue, including stories by such writers as Vandana Singh, Tricia Sullivan, Karen Traviss, Jon Courtenay Grimwood, John Kessel, Nalo Hopkinson, Greg Egan, and Una McCormack.  Back issues of the journal are archived at the University of Liverpool's SF Hub whilst more recent issues can be found electronically via the database providers ProQuest.

Kevin Smith (editor): Kevin Smith was an active British science fiction fan from the mid-1970s to the mid-1980s, producing such science fiction fanzines as "Drilkjis" (with Dave Langford) and "Dot", writing for fanzines ("Nabu", "Space Junk", and others), chairing British science fiction conventions, editing a 1979 anthology of British fanwriting titled "Mood 70" for Seacon '79, the 37th World Science Fiction Convention, and serving from 1980 to 1982 as editor of "Vector", the critical journal of the British Science Fiction Association.  He won the TransAtlantic Fan Fund in 1982.

Miss Austen Regrets: Miss Austen Regrets is a 2007 BBC drama film directed by Jeremy Lovering and written by Gwyneth Hughes.  It stars Olivia Williams as Jane Austen, with Imogen Poots, Greta Scacchi, Hugh Bonneville, Adrian Edmondson and Jack Huston.  It was first aired on 21 August 2007 in the U.K. and on 3 February 2008 in the U.S. by PBS Masterpiece drama anthology television series as part of "The Complete Jane Austen", the United States version of The Jane Austen Season.

Supporting paragraphs: Imogen Poots 28 Weeks Later
Answer: Tammy