National and Labour policies on domestic violence are still not enough to achieve the "culture shift" that New Zealand needs, says philanthropist Sir Owen Glenn.
Sir Owen, who has sunk $2 million into an independent inquiry into New Zealand's high rate of family violence, has issued a statement welcoming policies announced by National and Labour this month.
He praised National's promises to trial electronic tagging of 50 offenders and to explore a possible conviction disclosure scheme which might allow a person to be told whether their partner has a history of violence.
He supported an announcement by Justice Minister Judith Collins on Sunday that she was considering a recommendation from an expert committee to make non-fatal strangulation a separate crime because it was often an indicator of potential homicide.
He said Labour's proposals for a long-term action plan and possible alternative non-adversarial trial processes for sexual violence also have merit.