19% Users for Mobile Web

In UK, 5.7 million people use the mobile web, as opposed to 30 million who access the web by PC. Mobile web is already nearly one fifth the size of the PC web. In US, the stat is 17% (30 million of 176 million), which is pretty impressive considering that the US often lags behind a little in mobile. There are as many mobile web users in the US as there are PC web users in the UK.

Source: Mobile Weblog