Tata Trusts chairman Noel Tata is set to leave the boards of six Tata Group companies on November 12, when he turns 70. He will remain a Tata Trusts nominee director at Tata Sons, while succession arrangements remain unannounced. Mumbai: Noel Tata, chairman of Tata Trusts, is set to step down from the boards of six major Tata Group companies on November 12 when he turns 70, in line with the conglomerate's.