WPP's Chief Executive Office Martin Sorrell on Thursday outlined the amount the advertising company spends on digital promotions ahead of its first-quarter results. Sorrell said digital now accounts for 34% of WPP's media investment. The group spends $73bn globally on buying ad space across media from TV and press to Google and Facebook.He said advertisers should think seriously about the amount they spend on newspapers and magazines and accused Google, Facebook and Twitter of being media owners masquerading as tech companies. "The two big [anomalies] are newspapers and magazines. We are still investing 20% [of client ad budgets] but consumers are only spending 7-10% of time. That has to change".His remarks come a day before the company unveils its quarterly sales. Analysts expect sales growth of 2.5%.Credit Suisse said it believed the agency was well placed to benefit from the digital transition in fees and margin."We like the diversified nature of their revenues and relatively high exposure to faster growing markets," the broker said Wednesday,Analysts at Investec expect a strong cash return and dividend payment from WPP on the back of decent performance in emerging markets. However, it also noted the weak first-quarter sales from WPP's rival Publicis. "Recent poor 1Q Publicis like-for-like sales is unhelpful for WPP sentiment though we believe WPP should outperform given better geographic mix and Jan/Feb trading to date," Investec said last week. The stock was issued a 'buy' rating.Friday April 26 INTERIM DIVIDEND PAYMENT DATE Air Partner, Finsbury Food Group, Foresight 4 VCT, Henderson EuroTrust, Plexus Holdings, RIT Capital Partners, Smiths Group INTERNATIONAL ECONOMIC ANNOUNCEMENTS GDP (Advance) (US) (13:30) M3 Money Supply (EU) (09:00) Personal Consumption Expenditures (US) (13:30) Personal Income (US) (13:30) Personal Spending (US) (13:30) U. of Michigan Confidence (US) (15:00) IMSS Rotork AGMS Aer Lingus Group, Alpha Pyrenees Trust Ltd., Churchill China, Espirito Santo Financial Group SAMinoan Group, New World Resources A Shares, OAO Severstal GDR (Reg S), Pearson, Rotork, Senior, Stadium Group TRADING ANNOUNCEMENTS WPP FINAL DIVIDEND PAYMENT DATE Access Intelligence, Argo Group Ltd., Charlemagne Capital Ltd., Moneysupermarket.com Group SEGRO, Space and People, Tamar European Industrial Fund Ltd.RD