Question: In regards to the actress who starred in the 2013 British romantic comedy-drama film about a young man with the special ability to time travel who tries to change his past in order to improve his future, who did she portray in a BBC adaptation in 2011?

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Alfie (1966 film): Alfie is a 1966 British romantic comedy-drama film directed by Lewis Gilbert and starring Michael Caine.  It is an adaptation by Bill Naughton of his own novel and play of the same name.  The film was released by Paramount Pictures.

Vanessa Kirby: Vanessa Kirby (born 18 April 1988) is an English stage, TV and film actress.  She starred as Estella in the BBC adaptation of "Great Expectations" in 2011, as Joanna in Richard Curtis' romantic comedy "About Time" in 2013, and currently portrays Princess Margaret in Peter Morgan's Netflix series "The Crown", for which she has been nominated for the British Academy Television Award for Best Supporting Actress.  She is known mostly for her stage work; " Variety" in 2016 called her "the outstanding stage actress of her generation, capable of the most unexpected choices".

Time travel romance: Time travel romance is a subgenre of romantic fiction associational to Paranormal romance.  Time travel romance focuses on romantic love and includes an element of time travel.  Time travel romance stories may or may not have a happily ever after ending.  Jude Deveraux's A Knight in Shining Armor is one of the best known time travel romance novels of all time, famous for the lack of a happily ever after ending.  Time travel romances feature at least one character transported to an unfamiliar time period.  A recurring theme is the conflict of falling in love and subsequently the character must decide to stay in the alternate time or return to the time he/she came from.

DeLorean time machine: The DeLorean time machine is a fictional automobile-based time travel device featured in the "Back to the Future" franchise.  In the feature film series, Dr. Emmett Brown builds a time machine based on a DeLorean DMC-12 car, to gain insights into history and the future.  Instead, he ends up using it to travel over 130 years of Hill Valley history (from 1885 to 2015) with Marty McFly to change the past for the better and to undo the negative effects of time travel.  One of the cars used in filming is on display at Universal Studios Hollywood.

Past Tense (2014 film): Past Tense is a 2014 Philippine romantic comedy-drama film directed by Mae Cruz-Alviar, produced and distributed by Star Cinema.  Starring Kim Chiu, Xian Lim, and Ai-Ai Delas Alas.  This is the next film of Kim Chiu and Xian Lim with Director Mae Cruz-Alviar following "Bride for Rent" in the same year.  Released on November 26, 2014, "Past Tense" is the last Star Cinema film of Ai-Ai Delas Alas before she returned to GMA Network.  The last Star Cinema 20th Anniversary offering.  The film depicts elements of time travel.

Salmon Fishing in the Yemen: Salmon Fishing in the Yemen is a 2011 British romantic comedy-drama film directed by Lasse Hallström and starring Ewan McGregor, Emily Blunt, Kristin Scott Thomas and Amr Waked.  Based on the 2007 novel of the same name by Paul Torday, and a screenplay by Simon Beaufoy, the film is about a fisheries expert who is recruited by a consultant to help realize a sheikh's vision of bringing the sport of fly fishing to the Yemen desert, initiating an upstream journey of faith to make the impossible possible.  The film was shot on location in London, Scotland, and Morocco from August to October 2010.  The film premiered at the 2011 Toronto International Film Festival.  The film received generally positive reviews upon its release, and earned $34,564,651 in revenue worldwide.

Cashback (film): Cashback is a 2006 British romantic comedy-drama film written and directed by Sean Ellis.  Originally exhibited as a short in 2004, it was expanded to feature length in 2006.  Both versions were produced by Lene Bausager, starring Sean Biggerstaff and Emilia Fox.  The feature was released by Magnolia Pictures in late 2006 and also starred Michelle Ryan.

About Time (2013 film): About Time is a 2013 British romantic comedy-drama film about a young man with the special ability to time travel who tries to change his past in order to improve his future.  The film was written and directed by Richard Curtis, and stars Domhnall Gleeson, Rachel McAdams and Bill Nighy.  It was released in the United Kingdom on 4 September 2013.

Grandfather paradox: The grandfather paradox is a paradox of time travel in which inconsistencies emerge through changing the past.  The name comes from the paradox's common description: a person travels to the past and kills their own grandfather before the conception of their father or mother, which prevents the time traveler's existence.  Despite its title, the grandfather paradox does not exclusively regard the contradiction of killing one's own grandfather to prevent one's birth.  Rather, the paradox regards any action that alters the past, since there is a contradiction whenever the past becomes different from the way it was.

Chronesthesia: Chronesthesia or mental time travel is a mental ability first hypothesized by Endel Tulving in the 1980s.  This refers to the ability to be aware of one's past or future.  While many may describe it as uniquely human, others now argue that this ability can transcend to include non-human animals such as birds.  The mechanisms of mental time travel are not yet fully understood since there is a level of obscurity and complexity when trying to measure if or when someone underwent mental time travel or not.  However, studies have been conducted to map out areas of the brain that may be responsible for mental time travel.

Supporting paragraphs: Vanessa Kirby About Time (2013 film)
Answer: Estella