BUZZ-SThree: worst day in 4.5 yrs as warns of tough conditions
** London-listed white-collar recruiter SThree (LSE: STHR.L - news) down c8 pct, poised for biggest one-day drop since Dec 2011, after flags more difficult market conditions in Banking & Finance in both the UK and US
** Co says UK market impacted by EU referendum uncertainties
** Stock worst performer on FTSE Small Cap Index
** Stock +7.7 pct YTD (until Thurs close)
** Separately, Deutsche Bank (LSE: 0H7D.L - news) downgrades Hays (LSE: HAS.L - news) and PageGroup to "sell" (reckons slower US growth will be a precursor to weaker growth in other geographies) (Reuters Messaging: rahul.b.thomsonreuters.com@reuters.net)