** Shares of British oil & gas explorer Rockhopper
Exploration RKH.L fall as much as 28.2% to 9.30p
** Stock to mark its worst session in more than a year if
losses hold
** Co says Italy submitted an application to International
Centre for Settlement of Investment Disputes (ICSID) seeking to
annul 190 mln euro ($188.6 mln) compensation
** Co says it has a non-binding offer in place to fund both
fighting annulment and enforcing the award if required
** RKH stock among top pct losers across all London bourses
** Stock had surged almost threefold in value in August
after ICSID awarded compensation
** Up to last close, stock had risen ~37% YTD
($1 = 1.0076 euros)
(Reporting by Prerna Bedi in Bengaluru)
((Prerna.Bedi@thomsonreuters.com;))