Online shopping will represent 5.2% of the overall UK grocery market by 2015, compared to 3.2% at the moment.
Joanne Denney-Finch, IGD chief executive, said: “Online grocery retailing is already growing at a phenomenal rate and there is still plenty of potential for significant expansion. Although online has a small share of the overall grocery market, it will be the fastest-growing channel.
“IGD research found 7% of shoppers say they are buying all their regular groceries online. Our latest ShopperTrack data shows 13% say they will use the internet to do more of their food and grocery shopping over the next 12 months, mainly driven by 18- to 34-year-olds.
“Retailers are driving online growth through new developments, such as ‘click and collect’, introducing smart phone apps and building stores specifically to cater for online orders.
“Wider delivery coverage and better home internet connections are some of the other reasons why internet grocery retail has the potential to grow significantly.”