Dixons and Carphone Warehouse have opened Carphone shop-in-shops in Currys and PC World stores on the first formal day of the two companies teaming up.

The newly created Dixons Carphone business has opened seven shop-in-shops and is planning to open another 23 in time for Christmas.

Dixons Carphone chief executive Sebastian James said: “Today is a big day. Our shares officially start trading on the Stock Exchange and we are off to a flying start with the opening of our first combined shops.

“We are delivering a clear message to our teams and to our customers: we are one.

“It is testament to the excitement, enthusiasm and hard work of our teams that we are able to launch these shops today and start turning our vision into reality.

“If this is what we can achieve on the first day, then the days to come should be very exciting indeed.”