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To celebrate its 25th birthday on 6 September, the world's longest running primetime medical drama, Casualty, is asking viewers to vote for their favourite episode from a shortlist of ten past classics.

From series 18's dramatic train crash to the sectioning of Ruth Winters (Georgia Taylor) in series 25; from series 12's mass motorway pile-up to Josh's (Ian Bleasdale) stabbing in series 15, viewers can go to the to watch highlights from the top ten shortlisted episodes, enjoy the current casts' most memorable moments and vote for their favourite episode. And in a special online exclusive, Casualty favourite Derek Thompson explains how not to end up in a hospital's emergency department.

Highlights of the episodes, specially-filmed cast interviews and voting details are available at .

The ten episodes chosen by producers as the most memorable Casualty episodes are:

Series 1, ep 15, 1986
Closure by Paul Unwin & Jeremy Brock (night shift goes on strike to protest about closure)

Series 7, ep 24, 1993
Boiling Point by Peter Bowker (riot and arson in the ED)

Series 12, ep 17, 1998
The Golden Hour by Barbara Machin (motorway pile-up)

Series 12, ep 22, 1998
Love Me Tender by Tony Lindsay (Tina admits to Eve she was raped)

Series 18, ep 1, 2004
End Of The Line by Ann Marie di Mambro (train crash)

Series 21, ep 15, 2007
Killing Me Softly by Barbara Machin (Josh gets stabbed)

Series 22, ep 24, 2008
Before A Fall by Dana Fainaru (Ruth's attempted suicide)

Series 23, ep1, 2009
Farmead Menace by Mark Catley (Holby race riots and Tess impaled on a building site)

Series 24, ep 47, 2010
Nice & Easy Does It by Sasha Hails (Megan's assisted suicide)

Series 25, ep 23, 2011
Place Of Safety by Dana Fainaru (Ruth sectioned)

Launched in 1986 at a time when the NHS was under increasing pressure, Casualty featured the working lives of the staff in the emergency department of a large, inner-city hospital. The first series consisted of just 14 episodes and a pilot. Now a quarter of a century on, Casualty runs for 47 weeks a year and is still a stately staple of ´óÏó´«Ã½ One's Saturday night schedule, regularly pulling in over six million viewers in a much-changed TV landscape.

´óÏó´«Ã½ Controller of Continuing Drama, John Yorke, says: "Very few television shows last two or three series and only a tiny handful last 25 years. During that time hundreds of medical dramas have come and gone, but Casualty has outlasted all of them."

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