Prime Minister Theresa May has fuelled speculation that the UK government may intervene in energy retail markets.

In a speech to the Conservative Party conference May highlighted the energy market as one which the Government may step into it.

May said "it's just not right that two thirds of energy customers are stuck on the most expensive tariffs".

The comments followed speculation that the Big Six energy companies may face tougher action than that proposed by the Competition and Markets Authority (CMA) following its inquiry into the sector.

A statement from Department for Business, Energy & Industrial Strategy this week added: “Energy markets must work for all consumers and the government is committed to making that happen.”

May reiterates Paris commitment

Also in her speech May said that the Government must keep its "promises to the poorest people in the world", provide humanitarian support for refugees, take the lead on cracking down on modern slavery and ratify the Paris Agreement.

The CMA concluded its investigation into the sector in June. Over 30 measures will be brought in after the most comprehensive investigation into the energy market since privatisation.

They aim to drive down costs by increasing competition between suppliers and helping more customers switch to better deals, whilst protecting those less able to benefit from competition.

> Read the speech in full here