Liz Truss has been criticised for taking private helicopters across the UK to attend Tory leadership campaign events, despite her pledge to support Net Zero.
The Foreign Secretary has used helicopters to travel to Tory hustings events in Exeter and Leeds, both cities that are accessible by train from London in less than three hours.
The 157-mile flight to Exeter and 170-mile flight to Leeds are expected to have taken around an hour.
Speaking to the i, Wera Hobhouse, a Liberal Democrat MP, said the flights "make a complete mockery" of Ms Truss's commitment to climate change policies.
"Sadly, this is what we've come to expect from Liz Truss's Conservative Party," she said. "Needlessly flying around like this makes a complete mockery of her promises on net zero. It's clear that she is not serious on climate change.
"The heatwaves were a stark reminder that climate change is happening, but Liz Truss has clearly forgotten this. She is flying blind and has failed to address the climate crisis throughout the entire leadership contest."
Ms Truss has pledged to support the UK's commitment to reach net zero by 2050 if she becomes prime minister, but has previously been criticised for using a taxpayer-funded private jet to travel to Australia on government business at a cost of over half a million pounds.
The trip is estimated to have generated around 500 tonnes of carbon dioxide, but her spokesman said the private plane was necessary to make her travel arrangements more flexible.
There is no suggestion that Ms Truss's helicopter trips on the campaign trail have been publicly funded, but The Telegraph understands Conservative Campaign Headquarters has allowed the Foreign Secretary and Rishi Sunak to waive the cost of travelling to hustings from their campaign expenses.
Mr Sunak has not used any private planes or helicopters during the course of the campaign.
A spokesman from Ms Truss's campaign said: "Liz is trying to meet as many members as possible over the course of this campaign as she fights for every vote. She will inevitably used many forms of transport as she criss-crosses the country."
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