Senior advocate Darius J Khambata has declined reappointment as a trustee of both the Sir Dorabji Tata Trust (SDTT) and the Sir Ratan Tata Trust (SRTT), citing the need to preserve his independence and expressing concerns over the future of the Tata Group’s ownership model. In a letter dated November 2 to Tata Trusts chairman Noel Tata and chief executive officer Siddharth Sharma, Khambata said he was unwilling to seek the consent of fellow trustees for his reappointment, as required under the law.