The Default Tariff Cap is now predicted to stay above £3,000 a year for the next 15 months, according to the most recent forecast from Cornwall Insight.

Continued market volatility amid concerns over the security of gas going into winter, in particular following the Russian invasion of Ukraine, have led to further jumps in price cap forecasts for Q4 4 2022 and Q1 2023.

The suggestions follows calls from the wider industry for the government to step up its support for consumers as millions across Britain face fuel poverty.