HEADNOTE
[This headnote is not to be read as part of the judgment]
After a low-speed motor vehicle pursuit involving the appellant driving her unregistered motor vehicle for approximately 3 kilometres with a police constable's vehicle behind her and signalling the need for her to pull over, the appellant drove onto her semi-rural property and into its attached garage. The constable stopped his vehicle close but at an oblique angle to the entrance to the garage, and ran in after the appellant's car with his firearm drawn. For some 19 seconds, neither the constable nor the appellant were in view of the police vehicle's dashboard camera.
The constable re-entered the view of the camera while stepping backwards out of the garage with his firearm pointed at the appellant's chest. He proceeded to handcuff the appellant with her hands behind her back and walk her to the front of his police vehicle. She was eventually taken to a nearby police station, where she was held for 6 hours before being released on bail.
The appellant brought claims for false imprisonment, five counts of battery, and assault constituted by the pointing of the firearm.
The constable arrested the appellant. The prohibition in Law Enforcement (Powers and Responsibilities) Act 2002 (NSW) (LEPRA), s 99(3) nevertheless made any arrest unlawful unless the constable suspected, on reasonable grounds, that the appellant's arrest was necessary for one of the purposes in paras (a)-(f). The constable's evidence, accepted by the primary judge, was that he suspected arrest was necessary to prevent the fabrication of evidence in respect of the offences and to prevent a repetition or continuation of the offending (s 99(3)(b) and (e)). The primary judge found that the constable had reasonable grounds for that suspicion and dismissed the claim for false imprisonment.
The appellant's evidence of events in the garage, which included four of the five acts said to be batteries, was rejected by the primary judge. His Honour dismissed her claim for the fifth battery, based on her handcuffing, on the basis that it rose or fell with the claim that her arrest was unauthorised.
As to the claim for assault, the constable gave evidence that he pointed his firearm at the appellant after she exited the vehicle because he mistook her car keys, held in her left hand, for a knife. The primary judge accepted that evidence, finding that although the perception had not been recorded in documents prepared by the constable on the day of the incident, it had been recorded in his statement for the appellant's prosecution prepared some weeks after the event. (That last finding was mistaken.) His Honour concluded that the pointing of his firearm at the appellant was reasonably necessary for the exercise of the constable's functions as a police officer, and accordingly that the assault was not actionable by reason of LEPRA, s 230.
Finally, the primary judge assessed damages on the hypothesis that the appellant had been successful as $170,000, including a sum of $90,000 for aggravation of her pre-existing PTSD condition and further treatment of that aggravated condition. The respondent submitted that the sum of $90,000 either should not have been awarded or was excessive, having regard to the uncertainty in the expert psychiatric evidence.
The issues in the appeal were:
(i) Whether the constable had reasonable grounds for his suspicion that it was necessary to arrest the appellant to prevent fabrication of evidence of the offences of which she was suspected or to prevent a continuation or repetition of her offending.
(ii) Whether it was reasonably necessary to the exercise of any of the constable's functions as a police officer for the constable to point his firearm at the appellant.
(iii) Whether the expert evidence of the appellant's psychiatrist, based on her account of her symptoms, justified a finding that the pointing of the firearm at the appellant aggravated her pre-existing PTSD condition.
(iv) Whether the primary judge had adequate regard to the uncertainty in the psychiatric evidence in making a hypothetical award of $90,000 as damages for aggravation of, and further treatment for, the appellant's PTSD condition.
Held, allowing the appeal (per Basten JA, Meagher JA and Emmett AJA)
As to issue (i):