Trevor Mallard's predecessor is telling him to grow up.

David Carter, Parliament’s Speaker during the last National-led government, has lashed out at Mallard's handling of the Parliamentary protest.

Anti-mandate protestors are into the seventh day of their rally on the grounds of Parliament.

Mallard's had sprinklers on, and blasted them with some of the world's most hated songs in an attempt to move them on.

Police say they don't endorse the tactics.

Carter told Kate Hawkesby it doesn't do anything for New Zealand's reputation on the international stage.

“Which is in tatters frankly. We had the Charlotte Bellis incident three weeks ago, and now New Zealand’s in the international headlines because we have a Speaker acting in a boorish, childish way.”

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