Casualty is the longest running emergency medical drama series in the world, first broadcast in 1986 and transmitted in the UK on BBC One (with repeats on UKTV Gold). It was created by Jeremy Brock and Paul Unwin. The 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 Emergency Department. Casualty is filmed approximately 3 months in advance of broadcast and runs for most of the year, taking a month's break during the summer.