The New South Wales Government will ban bikie colours in licensed premises in Sydney's Kings Cross as part of a range of measures targeting outlaw bikie gangs.

Bikies will also be banned from working in tattoo parlours, with legislative changes set to give the police commissioner the final say on whether a particular person can own the business.

The proposed changes to the Criminal Organisations Act will see police given the power to use drug and ballistics dogs to search tattoo parlours without warrant.

The measures are aimed at stifling the growing feud between rival bikie gangs the Hells Angels and the Nomads, who are believed to be behind a spate of Sydney shootings.

Police believe the Hells Angels were behind two drive-by shootings in Sydney's north-west on Thursday night, and authorities are bracing for a further escalation in the gang war.

Authorities say the overnight shootings are related to five others over the past week.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Listen Duration: 4 minutes 50 seconds 4 m 50 s O'Farrell announces crackdown on bikies Download 2.2 MB

Premier Barry O'Farrell says the director-general of the Department of Trade and Industry has agreed to pass regulations that will see 23 bikie gangs banned from wearing colours at 58 Kings Cross venues.

He says the new laws will give police the tools they need to tackle the "shooting spree" that is affecting Sydney.

"This is about sending a clear message that if you're wearing bikie colours, it doesn't make you beyond the reach of the law," he said.

"Wearing bikie colours doesn't make you a super hero that protects you from the long arm of the law."

Greater presence

Commissioner Andrew Scipione says police will be making good use of the laws banning colours as soon as they become available next Friday.

Mr Scipione says police are also looking forward to the changes in the Criminal Organisations Act which will give them a greater presence in tattoo parlours.

The parlours will be listed a prescribed organisation, which will prevent gang members working in them.

Bikie members are also banned from working in the tow truck industry, in security and in casinos.

"This will allow us to get out there and do our job particularly in certain locations," he said.

"This is also about assisting licensees when it comes to outlaw motorcycle gang members harassing or intimidating people - not only staff - patrons as well.

"It gives the police the authority to go down there when these people have been told to leave and they refuse to quit, arrest them and if need be charge them."

Mr O'Farrell says the legislation regarding tattoo parlours will be taken to cabinet on Monday.

But state opposition leader John Robertson says the new measures have not been thought out properly.

He says if the Premier is serious about cracking down on outlaw bikie gangs he should put more police on the streets.

"This Premier needs to be sitting down with senior law enforcement officers and drawing up a plan and a strategy to bring this gun crime to an end," he said.

"Yesterday we saw two shootings occur and we saw these gangs set fire to a police vehicle.

"Law and order is now being run by the bikies instead of the Government in New South Wales."