Clive Andrew Mantle is an English actor. He played general surgeon Mike Barratt in the BBC hospital drama series Casualty and Holby City in the 1990s, and Little John in the 1980s fantasy series Robin of Sherwood. He returned to Casualty in 2016 as Mike Barratt for the show's 30th anniversary.

Casualty is a British medical drama television series that premiered on 6 September 1986 on BBC1. The series was created by Jeremy Brock and Paul Unwin. It is set in the fictional Holby City Hospital, in the equally fictitious city of Holby, and features occasional crossovers of characters and plots with spin-off show Holby City. Casualty follows the professional and personal lives of the doctors, nurses, paramedics, hospital management and patients at Holby General. It features an ensemble cast of regular characters, and began with ten main characters in its first series, including the longest-serving character Charlie Fairhead. They have all since left the series. Many main characters have been written in and out of the series since. In addition, Casualty features guest stars each week, as well as recurring guests that take part in story arcs that span a portion of a series or multiple series.