Clothing and footwear are predicted to drive 35% growth in the UK online market, which will reach £69bn by 2022.
Mobile spend is also expected to jump 112% in the next five years, according to the latest research by GlobalData.
Although clothing and footwear are forecast to be the largest contributors to growth, sectors traditionally experiencing low online penetration such as health and beauty are set to rise significantly during the same period.
Clothing and footwear are also expected to account for 70% of all online returns by 2022.
Sofie Willmott, senior retail analyst at GlobalData, said: “Our e-retail report shows online shopper penetration for 16-34 year olds above 90% affirming the importance of the online channel for younger consumers.
“Online pureplays including Amazon and Asos continue to innovate introducing new technology and driving up consumer expectations of delivery and user experience, requiring multi-channel players to quickly follow suit to maintain their relevance.”
Wilmott forecasted that the health and beauty sector will experience the most growth in the next five years, with sales set to rise by 66.2%.
This is partly owing to department stores and online pureplays such as Lookfantastic.com and Asos, which are competing with market leaders Boots and Superdrug after “rapidly” improving their beauty propositions.
The company estimated that 78% of the UK population have shopped online during the past year.