BUZZ-FirstGroup : Seen down after forecast cut
** British transport company seen -5 pct, per pre-market trading indications from brokers, after it downgraded FY core earnings forecast
** Says adjusted EPS would be "slightly reduced", previously expected to post FY EPS of 12.7 pence
** Says U.S. coach and bus services were affected by severe snowstorms in January and increased competition
** Stock fell over 13 pct YTD (hanna.paul.thomsonreuters.com@reuters.net)