Andy Pomfret, the long-running Chief Executive Officer (CEO) of investment and wealth management firm Rathbone Brothers, is to step down as of next year.Pomfret, who joined Rathbones in 1999 as Finance Director before being promoted to CEO in 2004, will be retiring on February 28th 2014.He will be replaced by current Deputy CEO Philip Howell, who joined the company at the start of 2013."Having recruited my successor, I believe it's now time to use my experience as both a CEO and a non-executive director to develop a plural career," Pomfret said.Chairman Mark Nicholls said that the company has "flourished" under Pomfret's leadership.Nicholls said: "It is a tribute to Andy's farsightedness that he brought in Philip as a potential successor at the beginning of the year. Philip has become a key part of the senior team and I am delighted that he is taking over as Chief Executive. "The handover is already underway and I am confident that, under Philip, Rathbones will continue to prosper."BC