ONE OF MY CLIENT IS WORKING WITH TATA CONSULTANCY SERVICES LTD IN LODON.HIS RESIDENTIAL STATUS IS NRI.HIS TDS IS DEDUCTED IN INDIA AND COMPANY ISSUED FORM 16 IN INDIA AND THE TAX IS ALSO DEDUCTED IN LONDON AND TAX P60 CERTIFICATE IS ISSUED IN LONDON.NOW HOW CAN I TREAT THIS INCOME AND GET THE REFUND OF TDS DEDUCTED IN INDIA AS PER DOUBLE TAXATION.