An obscure company directed by Winston Peters' personal lawyer is at the heart of the NZ First campaign engine, documents from a Stuff investigation reveal.

Brian Henry is the sole director and shareholder of QComms. The company that has no online profile, phone number or any other listed information - but in 2018 charged the New Zealand First Foundation for at least $93,000 worth of work and reimbursements to contracted employees. One of these contractors is Henry's daughter.

As Stuff reported on Wednesday, the NZ First Foundation has received hundreds of thousands of dollars in political donations. Much of the money appears to have been spent by the NZ First party, with many donations not declared on electoral returns.

The Electoral Commission is now looking into the matter.

Stuff Political donations appear to have been hidden inside a secret slush fund controlled by a coterie of Winston Peters' trusted advisers.

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Henry is a trustee of the foundation, the director and shareholder of the company, and also the judicial officer of NZ First. This web of connections suggests he receives political donations in one hand and pays his own company with the other.

Some donors, who declined to be named for fear of retribution, confirmed to Stuff that they thought they were donating to the NZ First political party.

Henry was approached for comment, but did not respond.

ROBERT KITCHIN/STUFF Deputy Prime Minister and NZ First leader Winston Peters has been reluctant to answer questions about his party's handling of electoral donations this week, jousting with reporters outside the House.

Stuff understands QComms manages the party's Nation Builder web platform - a donation and campaign management platform used by NZ First and other political parties to raise money and run campaigns. Nation Builder fees are paid for from funds deposited into the NZ First Foundation accounts.

Invoice records for the NZ First Foundation reveal that two contractors for Thorn Services Limited drew wages from the Foundation account acting on behalf of QComms. One was former NZ First board member John Thorn. The other is Henry's daughter, Jamie Henry.

It is unclear precisely what services Thorn Services Ltd offered but they invoiced the New Zealand First Foundation for wages connected to work for QComms.

ROBERT KITCHIN/STUFF Deputy Prime Minister Winston Peters has continued to rebuff questions on his party's handling of election donations in the House this week.

​QComms was named on invoices for the NZ First Nation Builder account and access. Payments from the Foundation were also made for office equipment and reimbursements for Thorn Services employees for travelling around the country.

Records show at least $93,000 was charged to the NZ First Foundation in contracted wages, reimbursements and other expenses for work done for QComms, a company which appears to have no income other than political donations given to the foundation.

Henry did not reply to requests for an interview.

Peters was asked if he was aware of QComms and the service it provided to NZ First, but declined to answer.

On Wednesday, Peters said he would welcome an investigation into "fake news" and "false allegations".

"Look, we've got the Electoral Commission looking at all those matters, and when they're finished, they'll give you the answers," he said.

The party would need considerable time to assemble the documents the Electoral Commission has requested, he said.

Asked if the public could trust him, Peters was firm.

"Of course they can, they've always been able to trust me."