Casualty, stylised as Casual⁺y, is a British weekly television show broadcast on BBC One, and the longest-running emergency medical drama television series in the world. Created by Jeremy Brock and Paul Unwin, it was first broadcast on 6 September 1986, and transmitted in the UK on BBC One. The original producer was Geraint Morris.

The programme is based around the fictional Holby City Hospital and focuses on the staff and patients of the hospital's Accident and Emergency Department. The show has very few ties to its sister programme Holby City which began as a spin off from Casualty in 1999 and is set in the same hospital, but upstairs. The show's plots and characters occasionally crossover between the two programmes, but this is rare, and each show can easily be followed without having to watch the other. Casualty is shown weekly on a Saturday evening, which has been its time slot since the early 1990s.

Casualty and Holby City are both set in Holby City Hospital, in the fictional county of Wyvern, in the south-west of England. From the show's inception to series 26, episode 16, the city exterior is represented by Bristol, and well-known landmarks such as the floating harbour and Clifton Suspension Bridge are often visible in outdoor scenes. City of Bristol College was used as the location for most exterior shots of the hospital from 1986 until 2002 when a new exterior set was built in Lawrence Hill Industrial Park in the city at 51°27′33″N 2°34′01″W / 51.459094°N 2.567030°W / 51.459094; -2.567030.

Casualty may refer to:

A television program (usually television programme outside North America), also called television show, is a segment of content intended for broadcast on television. It may be a one-time production or part of a periodically recurring series. A single program in a series is called an episode.

A television series that is intended to comprise a limited number of episodes is usually called a miniseries or serial. Series without a fixed length are usually divided into seasons or series, yearly or biannual installments of new episodes. While there is no defined length, US industry practice tends to favor longer seasons than those of some other countries.

A one-time broadcast may be called a "special", or particularly in the UK a "special episode". A television movie ("made-for-TV movie" or television film), is a film that is initially broadcast on television rather than released in cinemas or direct-to-video, although many successful TV movies are later released on DVD.

A program can be either recorded—as on video tape or other various electronic media forms—or considered live television.

series (singular/plural) may refer to anything of a serial form:

See also: sequence

Angel Coulby (born 30 August 1980) is an English actress. She made her television debut in the BBC comedy 'Orrible. She is best known for portraying the character of Queen Guinevere "Gwen" Pendragon in the BBC fantasy series Merlin.

Coulby trained at Queen Margaret University in Edinburgh where she studied for a degree in acting.^{[citation needed]} She is seen in an episode of Scariest Places on Earth (#2.10 - Exorcism: Greyfriars Cemetery 1) as a student (Awassa Tact) who had an encounter with a ghost. Her breakthrough came in 2001 with her role in the Johnny Vaughan vehicle 'Orrible. She was later chosen to play Gwen, a young woman who would later become Queen Guinevere the legendary wife of King Arthur and Queen of Camelot, in the BBC One fantasy TV series Merlin. Coulby stars alongside fellow young actors Colin Morgan, Bradley James and Katie McGrath as well as seasoned veterans Anthony Head and Richard Wilson.

She has been announced as starring in the upcoming BBC Two Stephen Poliakoff drama Dancing on the Edge along with Chiwetel Ejiofor, Anthony Head and Jane Asher.