Monday 6 December lived up to its hype as the biggest online shopping day of the year, despite predictions that the honours would go to the last Monday in November, according to payment processor Retail Decisions.
It is too early for the group to provide definite figures but it reported that the day included one 60-second period in which £831,000 was spent online.
Bargain prices and limited offers will be part of merchants' armouries in the run up to the holiday period, but it is likely to be high street research that drives people to the web, according to IMRG managing director David Smith.
"Now that everyone has been paid, we are seeing online Christmas shopping really burst into life. Mondays tend to have the highest spend of the week as people go out to the shops over the weekend and try the products before making a decision," he said.
Smith added that online sales could top £6.4bn in December.
Research from security firm Symantec released last month revealed that UK shoppers will spend nearly £7.5bn online this Christmas.
The study, commissioned by Symantec's Norton brand and carried out by YouGov, found that UK web users will spend an average of £234.16 over the period, equating to around £7.4bn.
IMRG said that the adverse weather conditions may have helped the success of e-commerce, however there have been reports that the bad weather has also disrupted delivery schedules for goods bought online, which could negatively impact the industry in the long run if it continues.
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