Casualty confirms timings for explosive anniversary episodes amid new teaser

 The medical drama celebrates four decades on the air.

Casualty has shared when fans will get to watch the two-part anniversary episode for the medical drama's 40th anniversary. As previously announced, the double bill will air on 5 September, with the BBC now confirming the timings for what promises to be an explosive anniversary special.

BBC One's TV schedule now officially includes the double episode, with the two parts set to air back to back on Saturday 5 September at 8pm and 8.50pm.

The website also included longlines for the two episodes, seeing a "huge firebomb" leaving several characters' fates hanging in the balance, while the team looks at Dylan Keogh (played by William Beck) at a time of crisis.

Lives hang in the balance as a huge firebomb lights up the skies of Holby," the logline for part one reads, while part two teases: "As the team look to Dylan for guidance in their hour of need, does he have the strength to keep fighting?"

Fans of the long-running medical drama found out that the explosion storyline will get to coincide with Flynn Byron's 40th birthday as the series has shared a dramatic scene ahead of the anniversary.

In the clip, posted to Casualty's social media yesterday, Flynn (Olly Rix) receives a phone call from his daughters who wish him a happy birthday.

Moments after, he witnesses an explosion at St James' Hospital, as the Instagram post caption reads: "Flynn's birthday plans will have to be put on hold..."

Set to air almost exactly 40 years since Casualty first made the air, the anniversary episodes follow the series' latest boxset, titled Lethal Legacy.

These episodes, which saw a mysterious illness spread across the department, aired from April to July this year and resulted in a sad death