The British high street is a difficult place to compete. Dixons Carphone, the company behind Currys, PC World and Carphone Warehouse, knows that all too well after announcing plans to shutter 134 stores. The downsizing manoeuvre will merge any remaining PC World and Currys outlets under a single brand -- the convoluted "Currys PC World" -- with a smaller Carphone Warehouse section inside. Although its footprint will shrink by 11 percent, Dixons Carphone says it's "very confident" the move will have a "neutral or better" impact on sales and staff numbers. It's an ambitious target, and one that puts faith in its new three-in-one store concept.