Online retail sales in the UK grew 18% in December 2013 compared to the previous year, with total online spending reaching £11.1 billion. Mobile retail also saw very strong growth, with sales via smartphones and tablets up 186% and 292% respectively year-over-year. The document also notes that over two-thirds of UK consumers now own a smartphone, and many use their phones to research products while shopping in physical stores. Multichannel retailers saw 16-17% growth compared to 25% for pure online retailers.