I am very concerned for some of my poorest constituents who are eligible for £140 off their energy bills through the Warm Home Discount but not receiving it, because of a legal restriction – you only get it if your energy supplier has more than 250,000 customers.

I have joined with other MPs across the main political parties in asking the Government to look again at making it possible for all such vulnerable consumers to receive the same guaranteed support, irrespective of who happens to supply their energy – as recommended by Citizens Advice.

Around one in 12 people across the UK now suffer in this way – and that has trebled in the past three years with more and more people falling into poverty. There are now 2.2 million vulnerable consumers eligible in the UK for the Warm Home Discount.

• See the letter I co-signed to the Rt Hon Greg Clark MP, Secretary of State for Business, Energy and Industrial Strategy.