1040 GMT [Dow Jones] Experian's (EXPN.LN) 1Q update shows a stronger start to the year than expected and its biggest growth in three years, says Charles Stanley. It notes at constant exchange rates, organic revenue growth was 6% versus the brokerage's expectation of 4%. Unchanged revenue guidance reflects an exceptionally strong performance in Brazil, but this may not be sustainable, says CS. And unchanged Ebit guidance reflects margin challenges from higher investment in product and staff. Nevertheless, the brokerage is encouraged, noting good cashflow, $300M buyback and increased dividend. Buy rating. Shares +3.2% at 653p. ([email protected]) Contact us in London. +44-20-7842-9464 [email protected] (END) Dow Jones Newswires July 15, 2010 06:40 ET (10:40 GMT)