Electricity prices have literally tripled or quadrupled for some people - and for poor people the effect was even worse because the poorest groups are on prepay

Electricity prices have literally tripled or quadrupled for some people - and for poor people the effect was even worse because the poorest groups are on prepayment meters which are on the most expensive tariffs of all. So yes, there were people for whom the choice was "well I have £5 for today, either it's going in the meter so I can put heating on for a few hours and stay warm, or I need to use it to buy food to feed my family". This isn't some theoretical edge case scenario - this was a dilemma that many British families were faced with this winter.