* UK-based structural steel company Severfield's SFR.L
shares rise 10% to 60.4 pence; among top pct gainers on FTSE
Small Cap index .FTSC
** Company announces 10 mln pounds ($12.5 mln)share buyback
programme
** Company forecasts FY result which is slightly above
previous expectations
** Names Charlie Cornish as non-executive chair and
director, Kevin Whiteman to step down from board
** As of last close, stock down 6.2% in past 12 months
($1 = 0.8031 pounds)
(Reporting by Judes Joseph in Bengaluru)
((judes.joseph@thomsonreuters.com))