Project Servator involves high-visibility police patrols with an emphasis on more public interaction and preventing crimes before they happen.

The state will be the first jurisdiction outside the UK to adopt the tactic, which was pioneered by London police in 2014.

NSW Police said it involves deploying both high-visibility and plainclothes officers, including those trained to look for signs someone is planning a crime.

Project Servator patrols will wear a patch on their sleeve and will interact with members of the public, who will be encouraged to approach and help police.

The strategy has been successful in helping UK counter terrorism units prevent attacks, but Deputy Commissioner Jeff Loy said the patrols will target all levels of crime.

"The community can expect to see unpredictable, high-visibility police deployments at various locations, initially in Sydney but potentially elsewhere as well," he said in a statement on Monday.

"Uniformed, plain clothes and specialist officers will be out in force and engaging with local businesses and people going about their daily activities."

Project Servator has already gained results around the CBD in recent months, police said.

Australian Associated Press