Analyst Forrester is predicting tablet ownership in Western Europe will quadruple by 2017 – with the percentage of online adults owning a slate projected to increase markedly from less than a fifth (14 per cent) last year to more than half (55 per cent) in 2017. In 2011 the tablet-owner figure stood at just 7 per cent, underlining how quickly digitally connected consumers are adopting slates.