The prime minister is poised to drop his heat pump targets in another retreat from measures to tackle climate change.
The move would scrap plans to fine boiler makers who fail to meet strict production targets for heat pumps, which was due to come into force in April.
Industry bosses have been lobbying Whitehall to delay or scrap the policy, arguing that the quotas are unrealistic given sluggish demand for heat pumps and a shortage of installers.
