Allegations about politicians using public money to bankroll private pleasures include some of New Zealand’s agricultural representatives.

Trade Minister Tim Groser is defending his liquor bill from the Copenhagen climate change conference saying that over the eight-day stay it amounted to about two drinks a day.

And he says he was never inebriated on the job.

The receipt from a Copenhagen hotel on his ministerial credit card bill lists bourbon, The Famous Grouse whisky, gin, wine, cognac, and Jim Beam.

Mr. Groser says it included hospitality for other people.

Mr Groser and members of a trade delegation were also  the subject of a complaint made public at the weekend about rowdy drinking on a flight back from Dubai in April.

Speaking about the flight,  Mr Groser said it had been "rowdy men".

Meantime, former Agriculture and Forestry Minister Jim Anderton enjoyed a massage charged to a ministerial credit card while in Kuala Lumpur for an illegal logging  conference in 2008.

Credit card statements for Mr Anderton showed $620 worth of spa treatments.

Although there is no apparent documentation showing it, he says the money "would have been paid back".