S. 153A: Assessment-Search-Information from Investigation wing-Foreign Bank-The assessee has accepted the relevant documents as genuine-Not necessary to follow the procedure laid down in S. 65B of Indian Evidence Act, 1872-Admissible as evidence-Deposits in HSBC London-Income from other sources-Art. 23(3) of Indo-UK DTAA is not automatically applicable-DTAA-India-UK-Bank account showed closed status-Notional interest income cannot be estimated. [S. 90, Indian Evidence Act, 1872, S.65B, Art. 23(3)]