Britons' online spending grew significantly in 2013, new figures have revealed.
Statistics from the IMRG Capgemini e-Retail Sales Index show a total of £91 billion was spent over the internet last year, which represents a 16 per cent increase on 2012 - IMRG and Capgemini had only forecast growth of 12 per cent.
The organisations said online now accounts for more than a fifth (21 per cent) of the total retail market.
December saw strong sales growth, with internet trade growing by 18 per cent when compared to the same month in 2012.
Tina Spooner, chief information officer at IMRG, said: "With online shopping having become part of our everyday lives, the growth levels we are seeing in the e-retail market won't be slowing down anytime soon."
She stated the online retail market is expected to grow by a further 17 per cent in 2014, with sales exceeding the £100 billion threshold by reaching £107 billion.
"Shopping has become a leisurely activity for many of us and mobile devices have fundamentally altered the way that consumers engage with brands," Ms Spooner added.
The e-Retail Sales Index revealed sales made through mobile devices have increased significantly, growing by 138 per cent over the course of 2013.
More than a quarter (27 per cent) of all online sales came from mobile in December, accounting for £3 billion - double the amount that was spent in the same month in 2012. Some 82 per cent of these mobile sales were made from tablets.
The growth in online trade was seen across a range of sectors - clothing and electrical goods saw increases of 17 per cent and 18 per cent respectively.
Click and collect was also increasingly popular, with many people choosing to pick up their online purchases from convenient locations.