International investment trust companies the Alliance Trust and the Second Alliance Trust are both appointing Lesley Knox as non-executive director.
Knox was formerly governor of the British Linen Bank when it was bank of Scotland's merchant banking arm, and was previously with Slaughter & May and Shearman & Stirling, as a solicitor, in New York.
The two Alliance Trust companies, formed in 1883 and 1888, have total assets of £2.5bn, and offer banking and financial services through its Alliance Trust Savings arm.
Alliance Trusts chief executive Gavin Suggett says: “As a self managed trust investing internationally we face a rapidly changing marketplace and need a strong, experienced and forward-looking board. I am absolutely delighted with her appointment.”