
A heat pump still costs a hell of a lot more than a high gas bill or a new boiler.
New boiler: £3000
New heat pump: £12000 (without subsidy)
You’d have to increase a new boiler by a lot to make a heat pump worthwhile currently, and then you’ll find most people would be able to afford neither.
They are a green party, funnily enough. They don’t “need” to become a socialist party.