NSW premier to take 'strong' ICAC action

NSW Premier Mike Baird has warned colleagues found to have acted improperly in the latest corruption probe that he will be their "worst nightmare".

Mr Baird says he's determined to restore the public's trust in his government amid explosive claims at the Independent Commission Against Corruption (ICAC) about the Liberal Party.

"I don't care what political badge you have," Mr Baird told reporters on Wednesday.

"If you have done wrong and if ICAC has shown you have done wrong, then I am your worst nightmare."

The ICAC has heard allegations the NSW Liberal Party's main fundraising arm helped funnel banned donations back to the party.

The corruption probe has already seen four Liberal MPs, including a minister, relegated to the cross bench.

Mr Baird, who replaced Barry O'Farrell after the last round of ICAC hearings, said he would do everything in his power to clean up state politics.

"The actions we take will be strong, they'll be swift and the community will see that we're determined to fix and ensure that events that have been unravelling for many weeks down at ICAC do not happen again," he said.