Once Joyce spotted him, Finlay said the politician crossed the road and circled him "like a bull".

"He did a circle around me. He got within two to three metres [of me] and he had his fists clenched … His blood was boiling," he said.

Joyce took out his phone and started recording the altercation and posted it to his Twitter account on Sunday morning.

In the short clip, he asked Finlay, who works for Matrix and was banned from a red carpet in 2006 for spraying Heath Ledger and Michelle Williams with water guns, for his and his employer's name, but Finlay refused to give them.

On Monday morning, eight days after Joyce and Campion's sit-down interview on Seven's Sunday Night, Joyce appeared on the same network to call for more stringent privacy laws.

"Private individuals, kids especially, should have greater protections than what they've got. They haven't got any," Joyce said on Sunrise.

The former Nationals leader also denied to host David "Kochie" Koch that he had shaped up to throw a punch at Finlay.

An insider, who asked not to be named, believes that by highlighting Finlay on Twitter the way Joyce did, he drove the price and the demand for the images up.

Loading

"If that confrontation didn't happen the pictures definitely wouldn't have made that much at all, possibly just a sale to the Daily Mail. Barnaby shot himself in the foot by doing what he did because people want to see what all the fuss was about," the insider said.

Finlay said the whole ordeal has been "a headache" for him, but he has no regrets and will continue to pursue Joyce and his new family.

"They sold their soul to Sunday Night and now they are a legit news story because of those actions," he said.

"You won't see us chasing Malcolm [Turnbull] or [Bill] Shorten, unless they get into the same situation Barnaby is in, like cheating on his wife.

"A lot of people criticise us. They say, 'Get a real job,' but it's supply and demand. They read the newspapers and magazines. People want to see if he will stick with this new family."