a Mason, managing director of the Domestic & General guarantees group, died suddenly at the age of 59.
The popular and successful leader had led a culture overhaul of the Wimbledon-based company aimed at improving employee well-being and customer satisfaction.
He joined in July 2016 and was also a non-executive director of Qinetiq.
Under his command, D&G was leading the charge against suspected rogue traders who he said were deceiving households into purchasing policies designed to resemble those of D&G.
He died of a heart attack, leaving behind his wife and three children.
President David Tyler said: “Ian was extremely important to Domestic & General. Not only was he our CEO and leader, he was an extremely popular figure.
“A proud Geordie, he had a great sense of humor and a passion for everything we did in this business.
“The focus on improving customer service has been a cornerstone of our growth strategy since he joined D&G in July 2016, and he has successfully guided us through this extraordinary last year under three pillars.
The executive committee will steer the business while an interim management team is organized.