British shoppers have spent more than £100 billion online in the last 12 years, according to the latest figures from IMRG.

Research by the e-commerce industry body, found that online sales reached £3.46 billion in April and the total amount of money spent on the web since 1995 is set to reach £100 billion next month.

“This is an astonishing landmark,” said Jo Evans, managing director of IMRG. “It’s been obvious for a couple of decades that a secure, networked consumer marketplace would arrive and be popular, but actually witnessing its profound success and meteoric growth still takes my breath away. April’s online sales were worth about the same in one month as London’s West End takes in a year.”

Last month saw a 55 per cent jump in online spending – the largest annual rise since December 2003. According to the report, this is higher than the average year-on-year growth rate of just 32 per cent recorded during the previous twelve-month period.

“These figures are great news for the online stores,” said Graham Cluley, senior technology consultant at Sophos. “But, at the same time consumers need to be careful. We detect on average 8,000 malicious web pages per day. The internet is perfect for impulse shopping, however home users need to check that they have proper security in place and apply some common sense.”

Andrew Horbury, programmes manager at VeriSign, added: “If you drive traffic to a site you need to make sure you can convert that traffic and improved and visual security can help retailers achieve this. Securing the web is not a huge cost but is incredibly important.”