Mr Choo had served on the Education Committee of Asian Institute of Chartered Bankers for 14 years, between 2000 and 2014; and was re-appointed to Education Committee in June 2016. He was appointed as a member of the University Malaya Medical Centre Ethics Committee for 2 years from 2014 to 2015. He is a Fellow Chartered Banker and currently serves as a member of the Board of Advisors, University Malaya, Faculty of Business and Economics.
He served as an Independent Non-Executive Director of Danajamin Nasional Berhad from 2018 to 2023 and was a member of Finance Accreditation Agency Accreditation Council. Previously, he was the Senior Independent Non-Executive Director of HSBC Bank (Malaysia) Berhad, where he chaired the Risk Committee and was a member of the Audit Committee as well as the Nominations and Remuneration Committee.