Based in London Turner will report to Ben Whitworth, executive director, and joins from UBS Wealth Management where he was a client adviser in the private wealth management team.
There he provided wealth management and financial planning advice to high net worth clients, with a focus on entrepreneurs and those in the world of sport and entertainment.
Prior to this he was a financial adviser with Bank of Scotland Investment Service.
Whitworth said: “Jason has an excellent reputation in the private wealth management arena, with a record of building and maintaining excellent client relationships. His experience, especially of working with entrepreneurs and senior executives, will prove highly valuable as we continue to expand our capabilities in this area.”