Newly-merged electronic goods and mobile phone retailer, Dixons Carphone has said trading over Christmas was a "rollercoaster" but its full year profit will be ahead of expectations.

The company which was formed last year by the merger between Dixons Retail and Carphone Warehouse, said it will now make pretax profit of £355 million - £375 million, rather than the £354 million it previously forecast.

It said sales at stores open for more than a year were up 7% in the nine weeks to January 3rd, while gross margins were stable.

Group chief executive Sebastian James said in a statement "The strange shape of this year’s Christmas trading was something of a roller-coaster but I am very pleased with the end result."