UPDATE 1-UK's Hammond seeks India assurance after $1.6 billion Cairn tax case
March 12, 2015 at 07:42 AM EDT
NEW DELHI, March 12 (Reuters) - British Foreign Secretary Philip Hammond raised concerns in India on Thursday over a $1.6 billion retrospective tax bill charged to British oil explorer Cairn Energy hours before he arrived in the country seeking to improve business ties.
