The Police Commissioner's putting a focus on the basics down as a key contributor to a fall in violent crime.

The New Zealand Crime and Victims Survey reveals most violent crimes have been dropping in the past two years, while sexual assault cases increased.

There's been a 113 percent increase in Police beat patrols over the last year.

Richard Chambers says he's been clear he wants his staff to do the basics well.

He says it means getting officers out into the community, but beat patrols are only one aspect and his team is doing an incredible job.

LISTEN ABOVE