BUZZ-HSS Hire: Shares slip on EBITDA margin pressure
** Tool & equipment rental co HSS Hire (Frankfurt: HG3.F - news) falls as much as 8.7 pct after reports lower operating margins
** H1 revenue +13.5 pct to 166.2 million stg
** JPMorgan says slip in adj EBITDA margin reflects the changed mix with lower-margin OneCall and Training accounting for much of the growth; rates "underweight"
** Broker sees pressure on EBITDA margin, cuts adjusted EBITDA estimates by 2 pct to 77.4 mln stg in 2016 and by 3 pct to 82.4 mln stg in 2017
** Share (LSE: SHRE.L - news) worst performer on FTSE All Share Support Services Index