Britain's Serious Fraud Office (SFO) questioned former Rolls-Royce chief executive John Rose in a bribery investigation the company settled last month, a person familiar with the matter said, confirming a Financial Times report. The SFO and Rolls-Royce also declined to comment. The newspaper said Rose, who was chief executive from 1996 to 2011, was one of many former Rolls-Royce executives questioned under caution in the investigation, which was the largest ever undertaken by the SFO.