Strone was appointed a director of Close Brothers Group plc "in March 2003, senior independent director in 2004, deputy chairman in 2006 and chairman in June 2008. He is chairman of the Nomination and Governance Committee. Strone is also chairman of British Empire Securities and General Trust plc, a governor of Heriot-Watt University and a trustee of the King’s Fund. Formerly he was a director of Flemings, chairman of Tribal Group plc and of JP Morgan Smaller Companies Investment Trust plc, executive deputy chairman of Misys plc and a non-executive director of AXA UK plc and of Kleinwort Benson Private Bank Limited." 
"Strone Macpherson is the Chairman of J P Morgan Smaller Companies Investment Trust (which he also founded), Close Brothers Group and British Empire Securities and General Trust. He is the originator and co-sponsor of INSEAD Mandela Scholarship Fund (Scholarships for Africans)."
- Trustee (treasurer), King's Fund