The shows will merge for the first time in 14 years as both teams strive heroically against the odds against a cyber attack

Casualty’s Charlie Fairhead will be among the cast in crossover between the two hospital dramas (Image: BBC)

Holby City and Casualty will merge for a special for the first time in 14 years.

The hospital dramas will join forces for a two-part show on BBC1 as the staff of the emergency department and the wards are hit by a cyber attack.

The crossover starts during Casualty on March 2 and will conclude during Holby City on March 5, its 20th anniversary.

Both shows are set in fictional Holby City Hospital.

Nicky McKendrick (Belinda Owusu) of Holby City will be hitting the small screen in the show touted as ‘nail-biting’ (Image: BBC)

Producer Simon Harper said: “You’ll see both the Casualty and Holby teams striving heroically against the odds in two episodes of pure, taut, emotional medical drama.

“There’s so much to relish… an especially poignant thematic resonance between two regulars, Connie [Beauchamp] and Jac [Naylor] in delicious conflict.

“And, perhaps most vitally, who from Casualty has been secretly carrying on with whom from Holby.”