Question: The actress that played Tiffany Mitchell in the BBC's "EastEnders" appears in what 2017 tv short film directed by Richard Curtis?

<P0-S0> Dorothy "Dot" Branning (also Cotton) is a fictional character from the BBC soap opera, "EastEnders", played by June Brown since 1985. <P0-S1>  Dot first appeared in "EastEnders" in July 1985 as the mother of criminal Nick Cotton (John Altman). <P0-S2>  The character has worked as a launderette assistant for most of that time along with original character Pauline Fowler (Wendy Richard). <P0-S3>  Dot moved away with her son and his family in 1993. <P0-S4>  In reality, Brown left the show in 1993, unhappy with the axing of her co star Peter Dean, who played Pete Beale from the shows first episode to early 1993. <P0-S5>  Brown returned to the role in 1997, and Dot was shown moving back to Albert Square, and has continued since that time. <P0-S6>  On 28 April 2017, Dot overtook Pat Butcher (Pam St. Clement) as the second longest-serving character in "EastEnders", surpassed only by original character Ian Beale (Adam Woodyatt). <P0-S7>  In a special episode entitled "EastEnders: Dot's Story" (2003) a young Dot was played by Tallulah Pitt-Brown in flashbacks. <P0-S8>  In April 2012, Brown took a six-month break from the show to write her memoirs. <P0-S9>  Dot temporarily departed on 18 May 2012. <P0-S10>  She returned on 14 January 2013. <P0-S11>  In February 2015, Dot began appearing less frequently due to Brown gradually losing her eyesight; this aspect of her life was later written into her character the following year. <P0-S12>  In January 2016, it was announced that Brown had renewed her contract with the BBC until March 2017. <P0-S13>  Brown is now the oldest soap opera actress in Britain. <P0-S14>  In January 2017 it was reported that the BBC were offering Brown £300,000 for a one-year contract. <SEP> <P1-S0> Martine Kimberley Sherrie Ponting (born 14 May 1976), known professionally as Martine McCutcheon, is an English singer, television personality and actress. <P1-S1>  McCutcheon's first television role was the part of Mandy in the TV show "Bluebirds" in 1989. <P1-S2>  She also had minor success as one third of the pop group Milan in the early 1990s, but it was her role as Tiffany Mitchell in the BBC's "EastEnders" that she is best remembered for, as well has her role in the 2003 romantic comedy "Love Actually". <P1-S3>  For the former she has won the 1997 National Television Award, whilst for the latter she received the 2004 Empire Award and the 2004 MTV Movie Award. <P1-S4>  She was written out of "EastEnders" at the end of 1998 to embark on a pop career, this time as a solo artist. <SEP> <P2-S0> Reina King (born April 11, 1975) is an American film and television actress. <P2-S1>  She began her acting career with the role of Carolyn (1985–1986), the adopted child of Roger and Nadine on the TV sitcom "What's Happening Now!! <P2-S2> "—a sequel to the popular 1970s TV sitcom "What's Happening!! <P2-S3> ". <P2-S4>  In 1987, she played Tiffany James in the movie "Maid to Order" and in 1988, she played actress Alfre Woodard's oldest daughter, Lanell Cooley, in the movie "Scrooged". <P2-S5>  Reina also appeared in one episode (The Sing-Off, as Girl #2) of the sitcom "227" in 1988; the same sitcom her sister Regina King starred in as Brenda Jenkins. <P2-S6>  In 1990, she played Rhonda in the film "To Sleep with Anger" with Mary Alice. <P2-S7>  And in 1998, Reina was in the short film "A Hollow Place" as the mother of Corliss Young. <SEP> <P3-S0> Red Nose Day Actually is a 2017 British romantic comedy television short film, acting as both a sequel to the 2003 feature film "Love Actually", and a part of the fund-raising event Red Nose Day 2017. <P3-S1>  "Love Actually" writer and director Richard Curtis returns alongside cast members Hugh Grant, Liam Neeson, Colin Firth, Andrew Lincoln, Chiwetel Ejiofor, Keira Knightley, Martine McCutcheon, Bill Nighy, Thomas Sangster, Lúcia Moniz, Olivia Olson, Marcus Brigstocke, and Rowan Atkinson.