BUZZ-Diploma: bottom of FTSE 250 after H1 results
** Diploma (LSE: DPLM.L - news) top FTSE 250 faller after results
** Posts 10 pct rise in H1 revenue to 163.2 mln pounds, adjusted pretax profit & EPS both up 6 pct at 29.3 mln pounds & 18.6p, respectively
** While results marginally beat Numis's expectations, it lowers forecasts owing to slightly more cautious outlook for organic growth in 2H15
** Broker downgrades rating on stock to "hold" vs "add" following strong recent share price performance (up c.20 pct YTD)
** Numis rated at 4 stars for recommendation accuracy on Diploma, StarMine shows
** Co supplies specialised technical products & services (RM (LSE: RM.L - news) : tricia.wright1.thomsonreuters.com@reuters.net)