* Q1 REVENUE EUR 367.0 MILLION VERSUS EUR 390.1 MILLION YEAR
* INVESTMENT BY IPSOS S.A. IN BIG SOFA TECHNOLOGIES GROUP
* REG-IPSOS IN 2017: AN ENCOURAGING LEVEL OF ACTIVITY,
STRONG DYNAMISM IN THE SECOND-HALF
LONDON British consumer confidence slipped in December to its second-weakest level in nearly four years, weighed by gloom about the state of the economy ahead of Brexit, a survey showed on Thursday.