Question: What is the birth year of this English actress, who graduated from the Royal Academy of Dramatic Art, and starred in The Heretic with Juliet Stevenson, James Fleet, and Johnny Flynn?

Context articles: Katherine Kelly (actress)
Daphne Slater
Sheila Hancock
Tomahawk Theatre Company
Lydia Wilson
Joan Collins
Jonathan Pryce
The Heretic (play)
Lynsey Baxter
Hannah Arterton

Katherine Kelly (born 19 November 1979) is an English actress.
 A 2001 graduate of the Royal Academy of Dramatic Art, she played Becky McDonald in the ITV soap opera "Coronation Street" from 2006 to 2012, for which she won Best Actress at the 2009 British Soap Awards and Best Serial Drama Performance at the 2012 National Television Awards.
 Since 2013, she has starred as Mae, Lady Loxley in the ITV drama series "Mr Selfridge".
Daphne Helen Slater (3 March 1928 – 4 October 2012) was an English actress noted for Shakespearian and period films.
 She was born in London and educated at Haberdashers' Aske's School for Girls, when it was in Acton, before attending the Royal Academy of Dramatic Art, where she won the academy's gold medal.
Sheila Cameron Hancock, CBE (born 22 February 1933) is an English actress and author.
 Hancock trained at the Royal Academy of Dramatic Art before starting her career in repertory theatre.
 Hancock went on to perform in plays and musicals in London, and her Broadway debut in "Entertaining Mr Sloane."
 (1966) earned her a Tony Award nomination for Best Lead Actress in Play.
 She won a Laurence Olivier Award for Best Performance in a Supporting Role in a Musical for her role in "Cabaret" (2007) and was nominated at the Laurence Olivier Awards four other times for her work in "" (1980), "The Winter's Tale" (1982), "Prin" (1989) and "Sister Act" (2010).
Tomahawk is a theatre company based in Oxford, South East England.
 Founded in 2005 by Alex Nicholls and Oliver Baird among others, experienced personnel work alongside young actors, directors and technicians, many of whom have gone on to train in London at the Royal Academy of Dramatic Art (RADA), London Academy of Music and Dramatic Art (LAMDA) and Mountview Academy of Theatre Arts.
Lydia Wilson (born 1984) is an English actress.
 Since graduating in 2009 from the Royal Academy of Dramatic Art (RADA), she has performed in numerous television and theatre productions including the Olivier Award winning "Blasted" by Sarah Kane in 2010 at the Lyric Theatre.
Dame Joan Henrietta Collins, DBE (born 23 May 1933) is an English actress, author and columnist.
 Born in Paddington, west London, and brought up in Maida Vale, Collins grew up during the Second World War.
 After making her stage debut in the Henrik Ibsen play "A Doll's House" at the age of nine, she trained as an actress at the Royal Academy of Dramatic Art (RADA) in London.
 She then signed an exclusive contract with the Rank Organisation and appeared in various British films.
Jonathan Pryce, CBE (born John Price; 1 June 1947) is a Welsh actor and singer.
 After studying at the Royal Academy of Dramatic Art and meeting his longtime girlfriend, English actress Kate Fahy, in 1974, he began his career as a stage actor in the 1970s.
 His work in theatre, including an award-winning performance in the title role of the Royal Court Theatre's "Hamlet", led to several supporting roles in film and television.
 His breakthrough screen performance was in Terry Gilliam's 1985 cult film "Brazil".
The Heretic is a British black comedy play by Richard Bean about climate change and its sceptics.
 In 2011 it premiered at the Royal Court Theatre receiving positive reviews directed by Jeremy Herrin starring Juliet Stevenson, James Fleet, Lydia Wilson and Johnny Flynn.
 It made its Australian debut in 2012 at the Melbourne Theatre Company in a production directed by Matt Scholten and starring Noni Hazlehurst, Andrew McFarlane, Anna Samson, Shaun Goss, Lyall Brooks and Katy Warner.
 The play was published in 2011, and was included in a collection of Bean's plays published in 2013.
Lynsey Baxter is an English actress.
 Born in London, she began as a child actress in 1974 and later trained at Royal Academy of Dramatic Art (RADA).
 She has worked in theatre, television, film, radio and voiceover.
Hannah Jane Arterton (born 26 January 1989) is an English actress.
 She was born in Gravesend, Kent.
 Arterton attended Gravesend Grammar School for Girls and graduated from the Royal Academy of Dramatic Art in 2011.
 Her feature film debut was the romantic musical "Walking on Sunshine" (2014).
 She is the younger sister of actress Gemma Arterton.