Question: Stepping Out was a British dancing talent show that included what British dancer who was a principal dancer with the Royal Ballet?

Context paragraphs:
César Morales (dancer): César Morales Anderson (born 17 November 1978) is a Chilean ballet dancer who, as of February 2014, is a principal dancer with the Birmingham Royal Ballet.  Born in Rancagua, Chile, César Morales began dancing at the age of eleven at the Ballet School of the Municipal Theatre of Santiago, where he trained for three years before being offered a scholarship by Ben Stevenson to train at the academy of Houston Ballet.  He returned to Santiago at the age of fifteen to complete his training and Ivan Nagy offered him a contract to join the Ballet de Santiago.  After a year in the Corps de Ballet, he was promoted to soloist and a year later to principal dancer immediately after his first performance of "Swan Lake".  Morales danced with the Ballet de Santiago until 2003, when he moved to Paris to work as a freelance guest artist, dancing in Paris, Slovenia and the Czech Republic.  He went on to join the English National Ballet in 2004, was Principal Guest Artist with Vienna Staatsoper in 2006 and then joined the Birmingham Royal Ballet in 2008.

Anna Rose O'Sullivan: Anna Rose O'Sullivan (born 16th April 1994) is an English ballet dancer and is a soloist at the Royal Ballet.  She commenced her dancing career as a member of the London Children's Ballet.  Later she trained at the Royal Ballet School and joined the Royal Ballet Company in 2012.  In 2015 she underwent her debut as Clara in The Nutcracker, after receiving the endorsement of Sir Peter Wright.  She is the winner of the Royal Academy of Dance’s Phyllis Bedells Bursary in 2010 and the Young British Dancer of the Year award of 2011.

Lydia Díaz Cruz: Lydia Diaz Cruz is a Prima Ballerina who started dancing in Havana, Cuba, and trained with Fernando Alonso and Alicia Alonso.  As a young dancer, she was talent-spotted by a well-known British dancer and teacher from an earlier era, Dame Phyllis Bedells, who traveled to Cuba and regarded her as the most naturally gifted dancer she'd seen since Margot Fonteyn.  Early marriage and exile from Cuba in the wake of the Castro revolution put a halt to her career, which she resumed after the birth of her third child in the early sixties.  She went on to dance in the United States with Ballet Concerto in Miami, became principal dancer with the National Ballet of Washington, D.C., and has performed in principal guest roles with the National Ballet of Venezuela, Washington Ballet, Ballet Spectacular.  She danced alongside many of the great artists of the day, including Margot Fonteyn and Melissa Hayden, among many others.

Irek Mukhamedov: Irek Mukhamedov OBE (born March 8, 1960 in Kazan, USSR), is a Soviet-born ballet dancer of Tatar origin who has danced with the Bolshoi Ballet & the Royal Ballet He trained at the Moscow Choreographic Institute under the guidance of Alexander Prokofiev between 1970 and 1978.  Upon graduation he joined the Classical Ballet Company, where he spent three years touring around the world.  It was with this company that he first danced Romeo, a role that was to become one of his most acclaimed.  In 1981 he won the Grand Prix and Gold Medal at the International Ballet Competition in Moscow and was immediately invited to join the Bolshoi Ballet as a principal dancer, where he not only became Grigorovich's favourite danseur but went to become the youngest man ever to dance the leading role in "Spartacus".  After leaving the Soviet Union, he became a Senior Principal Dancer with the Royal Ballet in London, remaining with the company for many years and dancing lead roles in the classic ballets as well as the English repertoire.

Stepping Out (UK TV series): Stepping Out was a British competitive dancing talent show that aired on ITV from 31 August to 28 September 2013 and was hosted by Davina McCall.  The judging panel, referred to on the show as "the front row", was confirmed on 29 August 2013 and consists of Mel B, Jason Gardiner and Wayne Sleep.  Unlike other similar dance shows, the dancers were all couples in real life, not one celebrity plus one professional dancer.

Alicia Markova: Dame Alicia Markova DBE (1 December 1910 – 2 December 2004) was an English ballerina and a choreographer, director and teacher of classical ballet.  Most noted for her career with Sergei Diaghilev's Ballets Russes and touring internationally, she was widely considered to be one of the greatest classical ballet dancers of the twentieth century.  She was the first British dancer to become the principal dancer of a ballet company and, with Dame Margot Fonteyn, is one of only two English dancers to be recognised as a prima ballerina assoluta.  Markova was a founder dancer of the Rambert Dance Company, The Royal Ballet and American Ballet Theatre, and was co-founder and director of the English National Ballet.

Johan Kobborg: Johan Kobborg (born 5 June 1972) is a Danish ballet dancer, choreographer, director and visual artist.  He is most noted as a ballet dancer, having been a principal dancer with both the Royal Danish Ballet and the Royal Ballet in London, as well as making guest appearances with other ballet companies.  Following his departure from the Royal Ballet in 2013, he became the director of the Romanian National Ballet Company.

Wayne Sleep: Wayne Philip Colin Sleep OBE (born 17 July 1948) is a British dancer, director, choreographer, actor and panellist.  He was a Principal Dancer with the Royal Ballet and has appeared as a Guest Artist with several other ballet companies.  He was a judge on the ITV entertainment series "Stepping Out".

Momoko Hirata: Momoko Hirata (平田 桃子 , Hirata Momoko , born 1985) is a Japanese principal dancer for the Birmingham Royal Ballet.  She attended the Reiko Yamamoto Ballet School before enrolling in the Royal Ballet School in the London, England.  She won the 2001 Prix de Lausanne and joined the Birmingham Royal Ballet in 2003.  She was promoted to First Artist in 2005, Soloist in 2008, and First Soloist in 2010.  She briefly danced with the Barcelona Ballet as a principal dancer in 2012, before returning to the Birmingham Royal Ballet where she was promoted to Principal in 2013.

Pamela May: Pamela May OBE (30 May 1917 – 6 June 2005) was a Trinidad born British dancer and teacher of classical ballet.  Most noted as one of the earliest members The Royal Ballet, she was regarded as a versatile dancer; dancing all the established 19th century classical repertoire, and creating roles in new ballets by Ninette de Valois and Frederick Ashton.  After retiring from professional ballet, she became a teacher at the Royal Ballet School, and also served as vice-president of the Royal Academy of Dance.

Supporting paragraphs: Stepping Out (UK TV series) Wayne Sleep
Answer: Wayne Philip Colin Sleep