Footage of the animal, Beau Lucy, being forcibly stopped by the vehicle after she escaped from her paddock emerged last month.

The 10-month-old calf is back with her owners and is believed to have made a full recovery.

Surrey Police says the investigation is being treated as a criminal and internal misconduct matter as it issued an update on the case.

It says this will take time.

The force also received over 20,000 messages on social media about the incident.