Comedian Rosie Jones is set to appear in Casualty on Saturday night.
In the long-running hospital drama Jones plays a woman who is drunk in a supermarket and throws a trolley through a glass door smashing it.
Jones explained that they were looking for someone to play Paula, who is a "feisty, strong, independent, alcoholic" and she felt that she perfectly fitted the bill.
This is not Jones' first foray into serious acting. She previously appeared in Silent Witness and also in th daytime medical drama Doctors.
