Question: The Mistress co-starred which English actress and entrepreneur?

Context paragraphs:
Fagun Thakrar: Fagun Thakrar, also known as Fagun, is an English actress and writer-director who has appeared in a number of English, Hollywood and Indian cinema.  She co-starred with Martin Sheen in "", receiving accolades for her performance.  Recently, she also starred opposite Donald Sutherland and Brie Larson in an American feature film, to be released in 2017.

Mary Ellen Pleasant: Mary Ellen Pleasant (born 19 August 1814?  – 1817 - died 4 January 1904) was a 19th-century African American entrepreneur widely known as Mistress Pleasant.  She identified herself as "a capitalist by profession" in the 1890 United States Census.  People called her "Mammy" Pleasant but she did not approve.  Mistress Pleasant used her fortune to further the abolitionist movement.  She worked on the Underground Railroad across many states and then helped bring it to California during the Gold Rush Era.  She was a friend and financial supporter of John Brown, and was well known in abolitionist circles.  After the Civil War, she took her battles to the courts in the 1860s and won several civil rights victories, one of which was cited and upheld in the 1980s and resulted in her being called “The Mother of Human Rights in California”.

Ellen Ternan: Ellen Lawless Ternan (3 March 1839 – 25 April 1914), also known as Nelly Ternan or Nelly Robinson, was an English actress who is mainly known as the mistress of Charles Dickens.

The Mistress (TV series): The Mistress is a British sitcom that aired on BBC2 from 1985 to 1987.  Starring Felicity Kendal and Jane Asher, it was written by Carla Lane.

Mary Robinson (poet): Mary Robinson (née Darby; 27 November 1757?  – 26 December 1800) was an English actress, poet, dramatist, novelist, and celebrity figure.  During her lifetime she was known as "the English Sappho".  She earned her nickname "Perdita" for her role as Perdita (heroine of Shakespeare's "The Winter's Tale") in 1779.  She was the first public mistress of King George IV while he was still Prince of Wales.

Sarah Fairbrother: Sarah Fairbrother (calling herself "Louisa" and known from 1859 as "Mrs FitzGeorge"; 31 October 1816 – 12 January 1890) was an English actress and the mistress of Prince George, Duke of Cambridge, a male-line grandson of George III.  As the couple married in contravention of the Royal Marriages Act 1772, their marriage was not recognised under the law.

Margaret Hughes (disambiguation): Margaret Hughes -- 17th-18th century English actress; mistress of Prince Rupert of the Rhine.

Ballet master: Ballet Master (also "Balletmaster", "Ballet Mistress" [increasingly archaic English language use], "Premier Maître de ballet" or "Premier Maître de ballet en Chef") is the term used for an employee of a ballet company who is responsible for the level of competence of the dancers in their company.  In modern times, ballet masters are generally charged with teaching the daily company ballet class and rehearsing the dancers for both new and established ballets in the company's repertoire.  The artistic director of a ballet company, whether a male or female, may also be called its ballet master.  Historic use of gender marking in job titles in ballet (and live theatre) is being supplanted by gender-neutral language job titles regardless of an employee's gender identity or expression (e.g. "Ballet Master" in lieu of "Ballet Mistress", "Wig Master" as an alternative to "Wig Mistress").

Jane How: Jane Onslow How (born 21 December 1950) is an English actress with a range of television, film and stage credits.  She is best known for her role as Jan Hammond, the mistress of Den Watts in "EastEnders".  She appeared in the programme regularly from 1986 to 1987 and also made brief return appearances in 2002 and 2003, the latter leading up to Den's return to the show.

Jane Asher: Jane Asher (born 5 April 1946) is an English actress, author and entrepreneur, who achieved early fame as a child actress, and has worked extensively in film and TV throughout her career.

Supporting paragraphs: The Mistress (TV series) Jane Asher
Answer: Jane Asher