Rise in complaints about 'Big Six' energy firms

There has been a sharp rise in the number of complaints about the 'Big Six' energy companies in the first quarter of this year, consumer magazine Which? has found.

The companies received 1.7 million complaints in the first three months of 2014, a rise of 15% on the 1.48 million received in the first quarter of 2013.

The firms, which account for 95% of the energy market, have been logging their complaints since October 2012.