UK mobile transactions have risen by over 40 per cent in value terms in the past year, according to a new study from the Internet Advertising Bureau, despite general uptake remaining almost flat. The study, which involved a national survey 1,000 UK consumers, said that 52 per cent of those surveyed had made a purchase using their handset in the past 12 months, but more importantly the average transaction value had increased by £5.29, or 43 per cent, to £17.49. The IAB said that, even though consumer barriers to using m-commerce in 2011 remained much the same as in 2010, the reaction that mobile Internet was "too expensive" had declined by 16 per cent and the preference for PC over mobile was down by 7 per cent. Release