BT’s rivals are “up in arms” about the telecoms group’s efforts to increase fees UK broadband providers pay it after taking control of landlines running to customers’ homes, according to Charles Dunstone, chief executive of Carphone Warehouse.

Mr Dunstone told the Financial Times he was strongly opposed to a price rise, partly because BT’s past performance in handing over control of landlines to Carphone had been “an absolute shambles”.