![\"Anxious](\"https:\/\/www.newsbeep.com\/ie\/wp-content\/uploads\/2026\/07\/0024c102-614.jpg\"\/)
\nOlly Rix as Flynn Byron<\/p>\n
The staff of Holby City Hospital are in the midst of an explosive disaster and face life-or-death emergencies in a first look at the Casualty 40th-anniversary episodes.<\/p>\n
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In a teaser trailer released by the BBC, fans were offered a first glimpse at the drama to come when the long-running medical show celebrates its landmark anniversary in September.<\/p>\n
The upcoming special episodes will be a double bill centred around beloved characters including Dr Dylan Keogh and Flynn Byron.<\/p>\n
\nOlly Rix as Flynn Byron<\/p>\n
The trailer opens with an explosion as emergency medicine consultant Byron, portrayed by Olly Rix, watches on in shock.<\/p>\n
An eerie chorus of children singing “Happy Birthday, dear Dad” can be heard as members of the emergency department, including clinical lead Dr Keogh (William Beck), gather outside the hospital.<\/p>\n
The preview provides glimpses of other fan-favourite characters, such as paramedic Jan Jenning (Di Botcher) and consultant Stevie Nash (Elinor Lawless).<\/p>\n
![\"Stevie](\"https:\/\/www.newsbeep.com\/ie\/wp-content\/uploads\/2026\/07\/0024c104-614.jpg\"\/)
\nElinor Lawless as Stevie Nash<\/p>\n
Many incident alerts are seen flagging up on a map of the show’s fictional setting of Holby before the trailer descends into chaos \u2013 showing a fight erupting in the hospital, as well as a tearful Dr Keogh.<\/p>\n
Rows of ambulances with flashing lights, patients being rushed around on stretchers, and a firefighter navigating a room full of wires while sparks are flying are also shown in the dramatic preview.<\/p>\n
The trailer does not reveal much, ending with a clip of what appears to be armed police officers approaching Holby City Hospital.<\/p>\n
![\"Siobhan](\"https:\/\/www.newsbeep.com\/ie\/wp-content\/uploads\/2026\/07\/0024c105-614.jpg\"\/)
\nMelanie Hill as Siobhan McKenzie<\/p>\n
The gripping anniversary episodes are said to focus on a “high-stakes major incident that throws Holby into chaos”, with lives hanging in the balance and the emergency department team “pushed to their limits”, the BBC said.<\/p>\n
It will also feature a major rescue operation, Dr Keogh will battle a personal tragedy as his team face “their darkest hour”, and Nash and Byron will face a life-threatening situation as they “fight for survival in a race against time”.<\/p>\n
The upcoming instalments will commemorate 40 years of the world’s longest-running medical drama whilst signalling an “exciting new chapter”, the BBC added.<\/p>\n
![\"Dylan](\"https:\/\/www.newsbeep.com\/ie\/wp-content\/uploads\/2026\/07\/0024c101-614.jpg\"\/)
\n(L-R) William Beck as Dylan Keogh, Barney Walsh as Cam Mickelthwaite, and Neet Mohan as Rash Masum<\/p>\n
The BAFTA-winning show first launched in 1986 with the late Brenda Fricker among its original cast.<\/p>\n
The success of Casualty led to the hit spin-off show Holby City, which was based around its fictional setting in southwest England.<\/p>\n
Holby City ended in March 2022 after 23 years and over 1,100 episodes.<\/p>\n
Casualty, which has been filmed at Cardiff’s BBC Roath Lock Studios since 2011, is also expected to move to a new fictional hospital in Wales next year.<\/p>\n
The Casualty 40th-anniversary episodes will air on 5 September on BBC One.<\/p>\n
Catch up on Casualty on the RT\u00c9 Player.<\/a><\/p>\n Source: Press Association<\/p>\n