BUZZ-Marshalls: hits post-crisis highs after strong H1
** Landscape products co Marshalls (LSE: MSLH.L - news) up 6.4% at post-crisis highs after posting H1 PBT up 48% at £20.8 mln
** Says if positive market conditions continue, likely that FY trading will beat expectations
** By far & away most actively traded stock on FTSE 250 index, with almost twice its 90-day daily avg volume having gone through in 45 minutes (2nd-top riser on index)
** Stock hits levels last seen early 2007 (RM (LSE: RM.L - news) : tricia.wright1.thomsonreuters.com@reuters.net)