Those replacing or installing new heating systems will be impacted first, perhaps as early as 2025, and eventually all high-carbon heating will be phased out.
The call for evidence is here https://www.gov.uk/government/consultations/a-future-framework-for-heat-in-buildings-call-for-evidence . This is a “Call for Evidence”, not an actual consultation on formal policy proposals. We remain concerned about the potentially disruptive impact of rapid changes required to heating systems for rural dwellers and businesses, which may be clustered together with limited physical space, subject to planning restrictions, or located remote from energy and transport infrastructure.