Tui UK and Ireland managing director Dave Burling said: "This shows the investment we have made in these devices. Customers want to research these holidays on the devices of their choice." In the same period, 49% of total web traffic came through these mobile devices. The company also revealed online sales will hit 50% of total sales this year, worth £1.8 billion in turnover. Burling added: "We have got a huge online business. This January we had half a million browsers of our hotel videos on our website; this gives you an indication of the scale of the business. “The biggest trend online has been the move towards developing sites which can work not just on desktops but on tablets and smartphones. We are continually looking at investing in this business and in terms of the quality and service we give.” Get the full story at Travel Weekly UK