WH Smith is being investigated by the City watchdog after the company revealed accounting failures in its US operations.The Financial Conduct Authority (FCA) said: "The investigation concerns potential breaches of UK Listing Principles and Rules and Disclosure and Transparency Rules in relation to the matters announced by WH Smith PLC on 19 November 2025." On that day WH Smith revealed that Carl Cowling, its chief executive of six years who had presided over the sale of the company's UK high street business ...