Theresa May must not pander to Donald Trump on climate change but invest to power a "new industrial revolution" in green technology, Liberal Democrat leader Tim Farron is to announce.
In a Westminster speech on Wednesday, the MP for Westmorland and Lonsdale will urge the Prime Minister to create another "Victorian"-style era of building, focused on tackling climate change.
He will call for a "sweeping programme of investment and reform on a level never seen before", stressing that the Lib Dems want to see a zero carbon Britain by 2050, a more ambitious target than the current legal requirement to reduce emissions by 80%.
Mr Farron will tell Mrs May to ignore the new US president, who has claimed climate change is a Chinese hoax, and invest in green technology.
The Cumbrian MP will say:
Mr Farron will say the Lib Dems are committed to limiting the global temperature rise to 1.5C rather than 2C and the party is enlisting experts to create a plan for a zero carbon UK.
The party plans to develop smart technology, make housing more energy efficient, and help businesses to improve their sustainability.