Seven's ground breaking police observational series The Force: Behind the Line last night became the year's highest rating new Australian programme premiere with a national average audience of 2.295 million.

The Australian TV first taking viewers behind the lines of the police force was the number one programme for the night in Perth with an average of 354,000 viewers, finishing in front of Seven's runaway success Border Security:Australia's Front Line averaging 346,000.

The Force and Border Security led a successful night for the Network with Seven securing six of the top ten programmes for the night.

Commenting on last night's performance, Seven's director of programming and production Tim Worner said The Force had surpassed expectation.

"Our goals are about growing the number of hit shows we have on Seven - it looks as though we might have another one," he said.

"The Force features the telling of some compelling police stories. It's a great credit to the very small team involved in putting it together and the policewomen and men who so openly allowed us into their workplace in order to tell those stories."

From the producers of Border Security , The Force follows the men and women of the police force in their constant fight for law and order.

With unprecedented access, Seven's cameras follow city, country and outback officers as they confront everything from dramatic hostage situations to murders, major drug busts, intricate detective cases and the hunt for dangerous criminals.

In next week's episode of The Force, (Tuesday, August 29 at 8pm) the battle for law and order continues when the Tactical Response Group (TRG) step in as a dangerous criminal plans his next hit; water police spot a large shark heading towards a group of swimmers; and police get caught up in the middle of a family feud.