Emergency procedures are being put to the test at Warwick Castle.
The exercise, taking place this evening (June 21) will test how staff and emergency services respond to a suspicious package incident.
Police, fire and ambulance services are all supporting the exercise.
Residents are warned they may see more blue-light emergency vehicles than usual in the area during the operation.
Supt Emma Bastone explained it was not in response to any threat.
She said: “It is simply good practice for us to work with iconic venues that attract a large number of people in order to test our emergency plans.
“These operations help staff and the emergency services ensure that should the worst happen, our response is effective and well-coordinated.”
A castle spokesperson said: “We want our guests to feel safe when they visit the castle, this kind of test helps to ensure our security procedures follow best practice and are aligned with the local emergency services. The safety of our guests and team members has always been our top priority, like other major visitor destinations, we continually evaluate our comprehensive security plans.”
Police have reassured locals if the notice an increase in emergency vehicles, it will likely be for the exercise taking place in the castle grounds.