A gang of youths abused staff at the Shrewsbury Prison visitor attraction and kicked gates after bursting into the venue as workers tried to close for the day.
The unsavoury incident took place as staff attempted to shut at the end of their shift at around 5.30pm on Sunday.
Footage of the incident shows ten or more youths – some hooded and some wearing face coverings – running into the facility as workers opened the gates to leave the premises.
Joel Campbell, CEO of The Cove Group which runs Shrewsbury Prison, said the staff had asked the youngsters to leave but were met with abuse and aggression.