S. 201 : Deduction at source-Failure to deduct or pay-Interest-Tax deduction at source-Failure to deduct tax at source-Capital gains tax-Limitation-Alternative remedy-Writ petition is dismissed-DTAA-India-UK-Strictures-Observations made by the Assessing Officer is directed to be expunged within two days and directed the ASG to take appropriate measures. [S. 45, 158(2),195, 201(1), 201(IA), Art. 14, Art. 226]