Residential customers have been hit by rising energy prices since the UK voted to leave the European Union (EU), according to figures from price comparison website uSwitch.

Twelve energy suppliers have increased the cost of their fixed-price deals since the referendum result, the website said.

The cost of fixed-price tariffs has risen by up to £105 over the past month.

A further three suppliers pushed up their prices in the run-up to the Brexit vote.

Concerns about future energy supply

The website blamed the increases on the rising cost of wholesale energy.

Tom Lyon from uSwitch said: “For nearly three years, wholesale gas and electricity prices have been falling, leading to cheaper and cheaper fixed-term deals for consumers.

“But with concerns about future UK energy supply, the impact of Brexit and a weaker pound, we are starting to see some suppliers increase the price of their cheapest deals.”

> See uSwitch's statement