Figures compiled by researchers at Mintel show that online sales in Britain have reached a staggering £12.8 billion in 2007, ahead of Germany's £10.3 billion during the same period.
France ranked a distant third with only £5.5 billion while other European countries listed in the research paper barely surpassed £1 billion.
Britain also recorded the highest growth rate in online sales with nearly 275 percent between 2005 and 2012.
Richard Perks, director of retail research at Mintel, said that, "The UK has by far and away the most developed online market in Europe".
"The main reason for this is the sophisticated online offering of the UK's food retailers and the fact that so many of us now more than happy to turn to the internet to do our weekly shop," he continued.
All major supermarkets in the UK (excluding Lidl and Aldi) offer online shopping facilities with British Retailer Tesco being the biggest of them all.