The appellants were convicted by a jury of robbery, having their faces masked, assault with an imitation handgun, and using an imitation handgun.
One appellant was also convicted of resisting a peace officer.
On appeal, the appellants argued the trial judge erred in his instructions on party liability for the firearm offences.
The Court of Appeal agreed, finding the jury was not properly instructed that a non-gun-wielding intruder must know the other intruder had a firearm to be found guilty as a joint principal.
The appeal was allowed for the joint convictions and disguise charges, but the conviction for resisting arrest was upheld as the appellant's actions constituted active resistance.