The CMJ is a buying group for independent retailers of watches and jewellery in the UK and Ireland and currently has over 150 members.
Michael Aldridge, chairman of CMJ, said: “Willie has now decided to pursue a career opportunity closer to his new home in the South of England and will announce his new appointment in due course.”
Terry Boot, who has been working within the business as head of finance and business operations, will in the interim take control on a day to day basis until a successor has been appointed.
Aldridge added: “During Willie Hamilton’s tenure, he has brought a wealth of previous industry experience in operations and marketing to CMJ and we wish him well and all the best for the future.”
Hamilton said: “After ten years, I now have a new career ahead of me. I wish all the members and suppliers within the CMJ Group well, as they continue to build on the success of the UK’ biggest jewellery buying group.”