The TV naturalist, 63, led a march of 60,000 nature lovers to the Houses of Parliament as part of a demonstration calling to "restore nature now".
He said he was "more than disappointed" that the environment has not featured heavily in party campaigns.
Mr Packham added: "I'm extremely angry about it. It should be the central part of all of the manifestos and it should be central to conversations that they're having about not just the next five years but our future.
"What we're looking at is classic short-sightedness and short-termism."
This story is from the June 24, 2024 edition of Daily Express.
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This story is from the June 24, 2024 edition of Daily Express.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
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