The records of all 150 House of Reps MPs citizenship status have been released, with both sides claiming their opponents have questions to answer.

Labor’s David Feeney was the first to ask to be referred to the High Court if missing documentation confirming he’d renounced his British citizenship couldn’t be found.

Labor says as many as eight Coalition Senators and MPs might be in trouble, including Energy Minister Josh Frydenberg and Nationals Minister Michael McCormack.

They say many have not provided conclusive proof they’d renounced their citizenship in time.

The government, on the other hand, says Tasmanian Labor MP Justine Keay, and Freemantle MP Josh Wilson are in some doubt, along with David Feeney.

Ms Keay, whose father was born in the UK, completed a declaration of renunciation on May 9, a month before the close of nominations for the 2016 election.

Labor Member for Braddon Justine Keay, Batman MP David Feeney, Labor Member for Longman Susan Lamb and Fremantle MP Josh Wilson could face High Court referral. (AAP/Facebook)

Australia Post confirmed the form was delivered to the UK Home Office on May 23.

However, the Home Office did not write back to her confirming the renunciation until July 8, six days after election day, and the declaration of renunciation was registered on July 11.

The Home Office letter was stamped both "received 31 May" and "received 16 June".

Ms Keay also tabled legal advice which said she had satisfied all the legal requirements for renouncing British citizenship when she mailed her completed form.

Mr Wilson, who was born in London, completed his renunciation form on May 12 and confirmation of its delivery was given on May 16, with the payment processed on June 6.

Justine Keay did not receive confirmation of her UK citizenship renunciation until after election day. (AAP)

Fremantle MP Josh Wilson. (Facebook)

However, the date of the UK Home Office letter confirming renunciation was June 24, well after the close of nominations for the 2016 election.

Longman MP Susan Lamb, whose father was born in Scotland, filled out her renunciation form on May 24 and the Home Office processed payment on June 6, three days before the close of nominations.

However, the Home Office sought further information on July 7, which she provided, and on August 10 the British bureaucracy told her: "We cannot be satisfied from the documents available that you hold British citizenship. The application has therefore been refused".

Ms Lamb also released legal advice which stated she had taken all necessary steps to renounce her citizenship when she sent her form on May 25.

Batman MP David Feeney, whose father was born in Ireland, said he had signed documents in October 2007.

Labor Member for Longman Susan Lamb. (AAP)

Batman MP David Feeney. (Facebook)

"As far as I am aware, those documents were sent to the relevant British and Irish authorities as required at the time," he wrote.

What happens now – whether any or all of them are referred to the High Court or not – is unclear.

Both sides are in the midst of those discussions, trying to decide how to resolve the issue.

But in this tit-for-tat political hothouse, it seems certain the High Court will hear a number of cases next year – and decide at least a few political futures.