The UK will miss its legally binding net-zero 2050 target with “dire consequences” unless climate policies are rapidly implemented, MPs have warned the government.

Efforts to reduce emissions have been undermined by “unacceptable” cutbacks and delays, according to a report from the Science and Technology Select Committee.

The government has cut grants for low-emissions cars, frozen fuel duty while train and bus fares have continued to rise and also removed policies to improve the energy efficiency of homes, MPs found.

Committee chair Norman Lamb said the UK is currently not on track to meet its goals into the 2030s, let alone net zero.

“Throughout our inquiry, it was worrying to hear that although the government may be ambitious when it comes to reducing carbon emissions, it is not putting the policies in place which are needed to achieve those targets. We need to see the government put its words into actions,” he said.

Climate change: Greenland ice cap accelerated retreating Show all 22 1 /22 Climate change: Greenland ice cap accelerated retreating Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 03: Icebergs float jammed into the Ilulissat Icefjord in a bank of fog during a week of unseasonably warm weather on August 3, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe has also reached Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 04: In this aerial view meltwater forms a lake on an iceberg in the Ilulissat Icefjord on August 04, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe has also reached Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: In this aerial view ice floats jammed into the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 04: An iceberg looms behind a boat carrying tourists at the mouth of the Ilulissat Icefjord on August 04, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe has also reached Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: Visitors look out onto free-floating ice jammed into the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: In this aerial view melting ice forms a lake on free-floating ice jammed into the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: A boat carrying tourists motors past an iceberg at the mouth of the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: Free-floating ice floats jammed into the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 04: Humpback whales spout water as they swim next to an iceberg in the Ilulissat Icefjord on August 04, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe has also reached Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 04: Icebergs and ice float in the Ilulissat Icefjord on August 04, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe has also reached Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 31: Tourists on an excursion boat photograph an iceberg during unseasonably warm weather on July 31, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: Inuit fishermen prepare a net as free-floating ice floats behind at the mouth of the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: Water drips from ice in the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: An iceberg floats in Disko Bay behind houses during unseasonably warm weather on July 30, 2019 in Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: In this aerial view melting ice forms a lake on free-floating ice jammed into the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 04: In this view from an airplane rivers of meltwater carve into the Greenland ice sheet near Sermeq Avangnardleq glacier on August 04, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe has also reached Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: Visitors walk among free-floating ice jammed into the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 03: Whales swim among icebergs jammed into the Ilulissat Icefjord during a week of unseasonably warm weather on August 3, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe also reached Greenland earlier this week. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 04: In this view from an airplane icebergs float in Disko Bay at sunset on August 04, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe has also reached Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - JULY 30: Flowers stand on a hillside at the Ilulissat Icefjord during unseasonably warm weather on July 30, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe is arriving in Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 03: A massive iceberg floating in the Ilulissat Icefjord peeks through a bank of fog during a week of unseasonably warm weather on August 3, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe has also reached Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) ***BESTPIX*** Sean Gallup Getty Images Climate change: Greenland ice cap accelerated retreating ILULISSAT, GREENLAND - AUGUST 04: In this view from an airplane humpback whales swim next to an iceberg at the mouth of the Ilulissat Icefjord on August 04, 2019 near Ilulissat, Greenland. The Sahara heat wave that recently sent temperatures to record levels in parts of Europe has also reached Greenland. Climate change is having a profound effect in Greenland, where over the last several decades summers have become longer and the rate that glaciers and the Greenland ice cap are retreating has accelerated. (Photo by Sean Gallup/Getty Images) Sean Gallup Getty Images

“We heard of cutbacks in various programmes and slow progress, which are incompatible with the UK’s two upcoming, legally binding carbon budgets – this is unacceptable. If governments across the world fail to act, it will have dire consequences for the environment and generations to come. The scale of the challenge cannot be underestimated.”

Hitting the target requires efforts to cut carbon emissions from heating systems, improve home energy efficiency, tackle vehicle pollution, support onshore wind and solar power and sustain nuclear power without growing the industry, the report said.

Meeting ambitions for virtually all cars and vans to be low carbon by 2050 will require 20,000 new registrations a week on average, compared to 1,200 ultra-low emissions vehicles registered each week in 2018, the report said.

2050 net zero: Government is falling short of target, says Committee on climate change CEO

Stuart Haszeldine, professor of carbon capture and storage at the University of Edinburgh, who was not involved in the report, said: “This illustrates the continual and widening UK gap between political top-down ambition, government delivery by the risk-averse civil service, and disconnect to conventional, commercial, un-charitable reason from the bottom-up.

“Fundamental change is required, but government keeps papering the cracks instead of fixing the foundations."

The committee joined calls for the government to bring forward a ban on the sale of new conventional cars and vans planned for 2040 to 2035 at the latest, and for it to explicitly cover hybrid vehicles.

It also called for moves to tackle emissions from car manufacturing, and urged greater efforts to reduce vehicle ownership, and boost public transport and car sharing, as well as walking and cycling.

The report also said the government must commit now to large-scale trials of low carbon heating technology such as heat pumps, and replacing gas with hydrogen.

A policy to make new homes “zero carbon”, which was scrapped before it was implemented in 2016, should be urgently reintroduced, and incentives are needed to encourage people to make energy efficiency improvements, it said.

Ministers must support new onshore wind and large-scale solar power projects which have local backing, the report added.

The government should also publish an easily accessible central guide for members of the public explaining what measures individuals and households can take to support the UK’s emissions-cutting.

Mark Carney warns companies that fail to respond to climate change 'will go bankrupt without question'

Myles Allen, professor of geosystem science at the University of Oxford, said stopping climate change is “astonishingly simple”.

He said: “What the government really needs to do is get the CEOs of about 20 fossil fuel companies into a room and ask them to explain how they plan to make both their activities and the products they sell compliant with net-zero global carbon dioxide emissions by mid-century. If any company cannot or will not answer the question, then we need to ask whether they should have a license to operate in the UK or a listing on the London Stock Exchange,” he said.