Question: Who played Prince Charles in the 2006 British fictional drama film depicting the British Royal Family's response to the death of Diana?

Context paragraphs:
Royal Marriages Act 1772: The Royal Marriages Act 1772 was an act of the Parliament of Great Britain, which prescribed the conditions under which members of the British Royal Family could contract a valid marriage, in order to guard against marriages that could diminish the status of the royal house.  The right of veto vested in the sovereign by this act provoked severe adverse criticism at the time of its passage.  It was repealed on 26 March 2015 as a result of the 2011 Perth Agreement.  Its provisions were replaced by more limited restrictions that apply only to the first six people in the line of succession (currently Prince Charles, Prince William, Prince George, Princess Charlotte, Prince Harry, and Prince Andrew).

Robert Jobson: Robert Jobson is a newspaper correspondent, broadcaster and author.  He is co-author of "" written with Princess Diana’s police protection officer Inspector Ken Wharfe MVO.  He is also the co-author of "Bulletproof", the life story of Royal Marine and George Cross recipient Matt Croucher GC.  He has written several non-fiction books on royalty, including "The Future Royal Family" (2015).  He has reported on the British Royal Family since 1991 as royal correspondent for UK national newspapers including the "Daily Express", "The Sun" and "London Evening Standard".  He was the recipient of the London Press Club "Scoop of the Year" award for his world exclusive that Prince Charles and Camilla Parker-Bowles were to wed in 2005.  Jobson is Royal Editor for Australia's 7 network top-rated breakfast show Sunrise.  He is also royal commentator for US network ABC News.  He is Royal Consultant for Mark Schwahn's originally scripted series "The Royals" for E! starring British actresses Elizabeth Hurley and Dame Joan Collins and played cameo roles as himself in series 1, 2 and 3.

The Queen (film): The Queen is a 2006 British fictional drama film depicting the British Royal Family's response to the death of Diana, Princess of Wales, on 31 August 1997.  The film was directed by Stephen Frears, written by Peter Morgan, and starred Helen Mirren in the title role of Queen Elizabeth II.

Princess Alice, Countess of Athlone: Princess Alice, Countess of Athlone, (Alice Mary Victoria Augusta Pauline; née Princess Alice of Albany; 25 February 1883 – 3 January 1981) was a member of the British Royal Family.  She is the longest-lived Princess of the Blood Royal of the British Royal Family, and was the last surviving grandchild of Queen Victoria.  She also held the titles of Princess of Saxe-Coburg and Gotha and Duchess in Saxony from birth, as well as a Princess of Teck by marriage, until 1917 when the British Royal Family ceased usage of German titles.  She was godmother to Queen Beatrix of the Netherlands, who is the granddaughter of her first cousin on her mother's side, Queen Wilhelmina of the Netherlands.

Grant Harrold: Grant William Veitch Harrold (born 1978 in Airdrie, Scotland) also known as The Royal Butler, 'Britain's Official Etiquette Expert' is a butler and advisor to various members of the British Royal Family and other notable people and celebrities.  and an etiquette expert and broadcaster.  He was also a butler for HRH Prince Charles, the Duchess of Cornwall, the Duke of Cambridge and Prince Harry.  He has also worked for Urs Schwarzenbach and Major Christopher Hanbury on the Ben Alder estate.

Monarchy of Belize: The monarch of Belize is the head of state of Belize.  The incumbent is Queen Elizabeth II, officially called Queen of Belize, who has reigned since 21 September 1981.  The heir apparent is Elizabeth's eldest son, Prince Charles, though the Queen is the only member of the royal family with any constitutional role.  She, her husband and consort, Prince Philip, Duke of Edinburgh, Prince Charles, and other members of the royal family, including the Queen's other children and cousins, undertake various public ceremonial functions across Belize and on behalf of Belize abroad.

Prince Maurice of Battenberg: Prince Maurice of Battenberg, KCVO, (Maurice Victor Donald; 3 October 1891 – 27 October 1914) was a member of the Hessian princely Battenberg family and the extended British Royal Family, the youngest grandchild of Queen Victoria.  He was known as Prince Maurice of Battenberg throughout his life, since he died before the British Royal Family relinquished their German titles during World War I and the Battenbergs changed their name to Mountbatten.

Alex Jennings: 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).

British royal family: The British royal family comprises the monarch of the United Kingdom and her close relations.  There is no strict legal or formal definition of who is or is not a member of the British royal family, and apart from Queen Elizabeth II herself, different lists will include different people.  Those who, at a time in question, carry the style His or Her Royal Highness (HRH), and any styled His or Her Majesty (HM), are normally considered members, including those so styled before the beginning of the current monarch's reign.  By this criterion, a list of the current royal family will usually include the monarch, the consort of the monarch, the widows of previous monarchs, the children and male-line grandchildren of the monarch and previous monarchs, the children of the eldest son of the Prince of Wales, and the wives or widows of the monarch's and previous monarchs' sons and male-line grandsons.

Genealogy of the British royal family: The recorded genealogy of the British royal family traces back to the early Middle Ages.  Although there is no strict legal or formal definition of who is or is not a member of the royal family, and different lists will include different people, those carrying the style His or Her Majesty (HM) or His or Her Royal Highness (HRH) are generally considered members.  The current British royal family are members of the House of Windsor.

Supporting paragraphs: Alex Jennings The Queen (film)
Answer: Alex Jennings