** Marks & Spencer +4%, 3rd-top FTSE 100 riser, after raises non-food margin forecast, beats H1 profitforecasts
** Non-food division increases gross margin by a greaterthan expected 2.85 percentage points in H1 and co raises FYguidance to up 2 to 2.5 percentage points v up 1 to 1.5percentage points previously
** H1 underlying PBT +6.1% to 284 mln pounds v analysts'forecast 270 mln pounds
** Stock hits levels last seen mid-August, YTD gain now 13%
(RM: tricia.wright1.thomsonreuters.com@reuters.net)