Question: Who is the three-time Olivier Award winner that also acted in "Ashenden"?

Context articles: Eileen Atkins
Nigel Hawthorne
Warren Mitchell
Ultz
Serializer
Alex Jennings
Rich Moore
Ashenden (miniseries)
Frances de la Tour
Stuart Piper

Dame Eileen June Atkins, DBE (born 16 June 1934) is an English actress and occasional screenwriter.
 She has worked in the theatre, film, and television consistently since 1953.
 In 2008, she won the BAFTA TV Award for Best Actress and the Emmy Award for Outstanding Supporting Actress in a Miniseries or Movie for "Cranford".
 She is also a three-time Olivier Award winner, winning Best Supporting Performance in 1988 (for Multiple roles) and Best Actress for "The Unexpected Man" (1999) and "Honour" (2004).
 She was appointed Commander of the Order of the British Empire (CBE) in 1990 and Dame Commander of the Order of the British Empire (DBE) in 2001.
Sir Nigel Barnard Hawthorne, {'1': ", '2': ", '3': 'CBE', '4': "} (5 April 1929 – 26 December 2001) was an English actor.
 He portrayed Sir Humphrey Appleby, the Permanent Secretary in the 1980s sitcom "Yes Minister" and the Cabinet Secretary in its sequel, "Yes, Prime Minister".
 For this role, he won four BAFTA TV Awards for Best Light Entertainment Performance.
 He won the BAFTA Award for Best Actor in a Leading Role and was nominated for the Academy Award for Best Actor for portraying King George III in "The Madness of King George" (1994).
 He later won the BAFTA TV Award for Best Actor, for the 1996 series "The Fragile Heart".
 He was also an Olivier Award and Tony Award winner for his work in the theatre.
Warren Mitchell (born Warren Misell; 14 January 1926 – 14 November 2015) was an English actor.
 He was a BAFTA TV Award winner and twice a Laurence Olivier Award winner.
ULTZ is a British theatre director and set & costume designer, best known for his work on the London stage.
 He won the Olivier Award for Best Set Design for the Royal Court production of "Jerusalem".
 His production of "Pied Piper - a hip hop dance revolution" won the Olivier Award for Best Production in an Affiliate Theatre for Theatre Royal Stratford East.
 "Ma Rainey's Black Bottom", which ULTZ designed for the National Theatre, won the 2016 Olivier Award for Best Revival.
serializer.net was an online artist collective that was active from 2002 to 2012.
 Serializer included many well-known award-winning alternative artists like Tom Hart (Xeric Award winner), Eric Millikin (Pulitzer Prize winner), Shaenon K. Garrity (Lulu Award winner), James Kochalka (Eisner Award winner), Dean Haspiel (Emmy Award winner), Howard Cruse (Prix de la critique winner), Chris Onstad (Ignatz Award winner), Nick Bertozzi (Harvey Award winner), and Jen Sorenson (Herblock Prize winner).
 Each artist created, and sometimes collaborated on, serialized webcomics.
Alex Jennings (born 10 May 1957) is an English actor, who has worked extensively with the Royal Shakespeare Company and National Theatre.
 A three-time Olivier Award winner, he won for "Too Clever by Half" (1988), "Peer Gynt" (1996), and "My Fair Lady" (2003).
 He is the only performer to have won Olivier awards in the drama, musical and comedy categories.
 He played Prince Charles in the 2006 film "The Queen".
 His other film appearances include "The Wings of the Dove" (1997), "" (2004), "Babel" (2006) and "The Lady in the Van" (2015).
Rich Moore (born May 10, 1963) is an American film and television animation director, screenwriter, voice actor, and a creative partner at both Rough Draft Studios and Walt Disney Animation Studios.
 He is best known for his work on the animated television shows "The Simpsons", "The Critic," and "Futurama", and for directing the Disney animated film "Wreck-It Ralph" (2012) and co-directing "Zootopia" (2016).
 He is a two-time Emmy Award winner, a three-time Annie Award winner, and an Academy Award winner.
Ashenden is a BBC1's four part miniseries based on the spy novel by W. Somerset Maugham, loosely based on adaptations of "The Traitor" and "The Hairless Mexican" were written by David Pirie, it was produced by Kelso Films for BBC and that aired from 17 November to 8 December 1991, directed by Christopher Morahan, with Alex Jennings in the title role, Joss Ackland as Cumming, Ian Bannen as 'R' and Jason Isaacs as Andrew Lehman.
 Guest actors included Harriet Walter as Giulia Lazzari in the first episode, Alan Bennett as Grantly Caypor in the second, Rene Auberjonois as John Quincy Harrington in the third, with Elizabeth McGovern as Aileen Sommerville and Alfred Molina as Carmona, the titular character, in the final story.
 A framing device at the start of each episode shows progressively more of an aged Ashenden living in France in the mid-1960s, reacting adversely to a piece of music on the radio.
 The final episode – which gives the context to this section – closes with a return to this "future" setting.
Frances de la Tour (also Frances J. de Lautour, 30 July 1944) is an English actress, known for her role as Miss Ruth Jones in the television sitcom "Rising Damp" from 1974 until 1978.
 She is a Tony Award winner and three-time Olivier Award winner.
Stuart Piper is a London-based Agent and Producer represents actors, comedians and creatives, as Managing Director of Cole Kitchenn Personal Management Ltd and Director of CKP Comedy and ROAR Comedy.
 His client list includes actors Janie Dee, Dame Joan Collins, Pixie Lott, Katherine Jenkins OBE, Hannah Spearritt, Marc Pickering, Chizzy Akudolu, Glynis Barber, Rita Simons, Mica Paris, Phoebe Thomas, Louise Jameson, Mark Moraghan, Sid Owen, comedians Jan Ravens, Josie Lawrence, Lewis Macleod and Hal Cruttenden, West-End and Broadway theatre stars 2016 Evening Standard Award Winner Tyrone Huntley, 2017 Olivier Award winner David Bedella, 2017 Whatsonstage Award Winner Emma Williams, Amy Lennox, Cassie Compton, Julie Atherton, Christine Allado, Caroline O'Connor, Rosemary Ashe, Stephen Carlile, Lauren Samuels, Melanie La Barrie, Siobhan McCarthy, Alexandra Silber, Judy Kuhn, Mazz Murray, and creatives Arlene Phillips, Russell Labey and Nick Winston.
 In 2010, the agency became part of ROAR Group led by Chairman Jonathan Shalit, expanding to become part of a group of entertainment companies.
 His team of agents include Oliver Thomson, Alex Segal, Ashley Vallance, Adam Maskell, Brooke Kinsella MBE, Martha Atack, Sam Day, Charlie Royce, Alex MacMillan.
 In July 2015, The Stage called him a "Star Maker" in a front page interview, and Broadcast Magazine have announced him as a Director of new ROAR Comedy company with Corrie McGuire from Objective and Professor Jonathan Shalit OBE.
 In Jan 2017 he was announced to have masterminded the acquisition of CKP (Christian Knowles Productions) the agency that represents Micky Flanagan, Zoe Lyons, Hal Cruttenden and Mark Watson and was appointed Director as reported in The Stage and on Chortle.