Gosford is a city located on the Central Coast of New South Wales, Australia, approximately 76 km north of the Sydney central business district. The city is situated at the northern extremity of Brisbane Water, an extensive northern branch of the Hawkesbury River estuary and Broken Bay.

The city is the administrative centre of the Central Coast region, which is the third largest urban area in New South Wales after Sydney and Newcastle. Gosford is considered a major commercial centre of the Sydney Metropolitan Area, and has been designated as an important growth centre under the NSW Metropolitan Strategy. The city's population was 155,271 in the 2006 census.

Gosford is considered an exurb of the Sydney metropolitan area, with a significant proportion of the population commuting for work or study. This can be attributed to a lower cost of living, lack of employment and educational opportunities in the area, lifestyle factors and the development of strong transport links like the Sydney-Newcastle Freeway and Cityrail's Newcastle and Central Coast railway line. These factors have caused Gosford, and the wider Central Coast's population to grow rapidly in recent years.

Dame Margaret Natalie "Maggie" Smith, DBE (born 28 December 1934) is an English film, stage and television actress. She has had an extensive career both on screen and in live theatre, and is known as one of Britain's pre-eminent actors. She made her stage debut in 1952 and is still performing after 60 years. She has won numerous awards for acting, both for the stage and for film, including seven BAFTA Awards (five competitive awards and two special awards including the Bafta Fellowship in 1996), two Academy Awards, two Golden Globes, two Emmy Awards, a Laurence Olivier Award, two SAG Awards and a Tony Award. Dame Maggie is the only actor ever to win this collective of awards and is one of the most successful and acclaimed actors of the film era.

Her critically acclaimed films include Othello (1965), The Prime of Miss Jean Brodie (1969), Travels with My Aunt (1972), California Suite (1978), Clash of the Titans (1981), A Room with a View (1985) and Gosford Park (2001). She has also appeared in a number of widely-popular films, including Hook (1991), Sister Act (1992) and as Professor Minerva McGonagall in the Harry Potter film series. She currently stars in the critically acclaimed drama Downton Abbey as Violet Crawley, the Dowager Countess of Grantham, for which she has won an Emmy.

Sir Michael John Gambon, CBE (born 19 October 1940) is an Irish actor who has worked in theatre, television and film. A highly respected theatre actor, Gambon is recognised for his roles as Philip Marlow in the BBC television serial The Singing Detective, as Jules Maigret in the 1990s ITV serial Maigret, and as Professor Albus Dumbledore in the last six Harry Potter films (following the death of actor Richard Harris).

Gambon was born in Cabra, Dublin, during World War II. His father, Edward Gambon, was an engineer, and his mother, Mary (née Hoare), was a seamstress. His father decided to seek work in the rebuilding of London, and so the family moved to Mornington Crescent in North London, when Gambon was five. His father had him made a British citizen, a decision that would later allow Gambon to receive an actual, rather than honorary, knighthood and CBE.

Brought up as a strict Roman Catholic, he attended St Aloysius Boys' School in Somers Town and served at the altar. He then moved to St Aloysius' College in Hornsey Lane, Highgate, London, whose former pupils include Peter Sellers and Joe Cole. He later attended a school in Kent, before leaving with no qualifications at fifteen. He then gained an apprenticeship with Vickers Armstrong as a toolmaker. By the time he was 21, he was a fully qualified engineer. He kept the job for a further year, acquiring a fascination and passion for collecting antique guns, clocks, watches, and classic cars.

Kristin A. Scott Thomas,OBE (born 24 May 1960) is an English actress who has also acquired French nationality. She gained international recognition in the 1990s for her roles in Bitter Moon, Four Weddings and a Funeral and The English Patient.

Since the 1980s, she has also worked in French cinema in films such as the thriller Tell No One and Philippe Claudel's I've Loved You So Long. She has lived in France since she was 19, has brought up her three children in Paris, and says she considers herself more French than British. She was made a chevalier of the Légion d'honneur in 2005.

Scott Thomas was born in Redruth, Cornwall. Her mother, Deborah (née Hurlbatt), was brought up in Hong Kong and Africa, and studied drama before marrying Scott Thomas's father. Her father, Lieutenant Commander Simon Scott Thomas, was a pilot for the Royal Navy's Fleet Air Arm who died in a flying accident in 1964. She is the elder sister of actress Serena Scott Thomas, the niece of Admiral Sir Richard Thomas (who was a Black Rod in the House of Lords), and a more distant great-great-niece of Captain Scott, the ill-fated explorer who lost the race to the South Pole.

Julian Alexander Kitchener-Fellowes, Baron Fellowes of West Stafford, DL (born 17 August 1949), known professionally as Julian Fellowes, is an English actor, novelist, film director and screenwriter, as well as a Conservative peer.

Fellowes was born in Cairo, Egypt, the youngest son of Olwen (née Stuart-Jones) and Peregrine Edward Launcelot Fellowes, a diplomat and Arabist who campaigned to have Haile Selassie restored to his throne during World War II.

His childhood home was in Wetherby Place in South Kensington.

Fellowes was educated at several private schools in Britain: first at Wetherby School (Wetherby Place, South Kensington, London), then at St. Philip's, a Roman Catholic pre-preparatory school, also in Wetherby Place; and finally at the Catholic public school Ampleforth College. He went up to Magdalene College, University of Cambridge, where he was a member of Footlights. He next studied at the Webber Douglas Academy of Dramatic Art (London).

Fellowes moved to Los Angeles in 1981 and played a number of small TV roles for the next two years. He believed his breakthrough had come when he was considered to replace Hervé Villechaize as the butler on the TV series Fantasy Island, but the role was given to a much older British actor.