Online sales of clothing, footwear and accessories were up 15% year on year in July. A growth rate of 12% was recorded compared with June.
According to the IMRG Capgemini e-Retail Sales Index, total online sales rose 18% year on year to £5bn last month.
Brits spent an average of £81 per person with a growth rate of 14% on June - the highest monthly growth of 2010 so far.
The performance of retailers with both online and bricks-and-mortar stores outshone that of online-only etailers. Multichannel retailers saw an 18% month-on-month growth while pure-play etailers saw an 8% rise.
Chris Webster, vice president, head of retail consulting and technology, at Capgemini, said: “Although online retail sales survived the recession more convincingly than high street sales, the last two years or so have no doubt been shaky at times. It is really encouraging to see growth levels returning to those seen pre-2007 and before consumer confidence was knocked by the financial crisis and recession.”