BUZZ-Serco: best day on record after 'reassuringly dull' results
** Serco rises 13.8 pct after reporting FY results, reiterating FY guidance for 2016
** Says revenues to fall to £3.5 bln from £4 bln, in line with expectations
** Traders say stock rallying on relief that the outsourcer, which has been beset by problems with its contracts, has not warned on profits again
** Liberum says results "reassuringly dull", says growth in order book to £6.5 bln to £5 bln is encouraging
** Stock down 85 pct since July 2013
** Best day on record for the stock, top riser on FTSE 250
(RM (LSE: RM.L - news) : alasdair.pal.thomsonreuters.com@reuters.net)