First-quarter user numbers grew by 4m -- around half the rate of growth seen at the end of last year -- and "Sky News" is reporting that a potential reason is a redesign that appears to have put people off the platform. The share price dropped 16%, the news channel is reporting, in after-hours trading on Wall Street.

Four publisher groups have warned Google that its preparations for GDPR are not good enough, MarTechToday reports. The four groups cover publishers in North America and Europe. Digital Content Next, European Publishers Council, News Media Alliance and the News Media Association are concerned about sharing personal data with the tech giant if they use it to serve ads.

The new joint chief operating officers of WPP are fighting back against City rumours by declaring that breaking up the business -- in the wake of Sorrell leaving -- makes no sense, "The Times" reports.

Research by the Chief Marketing Officer Council claims that its members are pulling back spend from Facebook and Google over concerns about rates as well as metrics, "Campaign" reports. Nearly two in three -- at 62% -- say they are reducing spend on the platforms.

Although WPP is denying that it is likely to break up any parts of its business, analysts have been told that the holding group is considering selling stakes in non-core companies so it can focus on its advertising business, "The Guardian" reports. The group owns 9% of Vice and a 15% share in AppNexus.

"The Telegraph" is reporting that the number of people approved for technology visas into the UK actually fell last year, despite the Government recently doubling the amount of visa on offer for a scheme it hopes will bring in more high-level talent from outside the EU.

L'Oreal has made a move into AR and AI with the purchase of ModiFace, a tech company whose platform allows users to try out different makeup combination virtually as well as track facial features, Netimperative reports.

MobileMarketing is reporting on questions surrounding Facebook's GDPR preparations. Most notably, questions are being asked of its tracking scripts, which allow it to model its users' behaviour. There could be a problem, experts are warning, if the scripts still run on pages downloaded by non-Facebook users.

Ashley Highfield, the CEO of Johnston Press, has resigned to pursue the next phase of his career, which he sees as featuring a number of non-exec directorships. He is to be replaced by Chief Financial Officer David King, CityAM reports.