I believe only full EV contribute towards government net Zero figures and as such will be the only vehicles to qualify for the perks.
Even plug ins have less than 10 years before they are banned.
New Pure petrol and diesel Inc mild hybrids only have 53 months left, so expect them to be getting phased out in about 3 years time as these can’t be sold from 1 Jan 2030, unless goalposts are moved.