LONGMAN Labor MP Susan Lamb is the latest politician to be caught up in the dual citizenship debacle that yesterday claimed Deputy Prime Minister Barnaby Joyce.

Ms Lamb, who became an elected member of parliament for the first time in 2016, said she took all necessary steps to renounce her UK citizenship, despite not hearing directly from the UK Home Office.

"As part of my nomination, I was advised that I may have been entitled to UK citizenship through my father, who is deceased," she said.

"On 23 May 2016 I took all necessary steps to renounce by completing and sending the UK Home Office Form RN, "Declaration of Renunciation of British Citizenship", and paying the requisite fee.

"Australia Post confirmed the Renunciation form was received by the UK Home Office in Liverpool on 25 May 2016.

"I was subsequently cleared to stand by the Labor Party, and nominated on 7 June 2016."


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Longman's first female representative Susan Lamb was sworn into parliament.
Longman's first female representative Susan Lamb was sworn into parliament. Contributed

Ms Lamb did not comment on whether she believed her parliamentary colleagues who had been found to be dual citizens should resign, but cited the 25-year-old High Court of Australia case Sykes v Cleary.

"In Sykes v Cleary, the High Court of Australia stated that a candidate would not be disqualified under section 44(i) providing they had taken "reasonable steps" to renounce any foreign citizenship prior to nominating for election."

It comes after Greens senators Scott Ludlam and Larissa Waters resigned over holding dual citizenship and yesterday, Deputy Prime Minister Barnaby Joyce revealed he was a New Zealand national.

Nationals MP and Cabinet Minister Matt Canavan and One Nation Senator Malcolm Roberts were referred to the High Court for the same issue.

In July, Prime Minister Malcolm Turnbull said the Greens showed "sloppiness" by falling foul of political rules around citizenship.

At the time he said: "It is pretty amazing, isn't it, that you have had two out of nine Greens senators didn't realise they were citizens of another country. It shows incredible sloppiness on their part".