Darius Khambata, who served as a trustee of both the Sir Dorabji Tata Trust and the Sir Ratan Tata Trust, has declined reappointment and sharply criticised the events surrounding the September 17 Tata Sons board meeting.

Darius Khambata declined another Tata Trusts term and criticised the September 17 Tata Sons board meeting. His letter deepened differences over N Chandrasekaran's reappointment and the proposed listing.