Shoppers are expected to spend £1bn online during Cyber Monday today – 31% more than last year, according to Experian and IMRG.
Total spend over four days from Black Friday to Cyber Monday is expected to reach £3.49bn, according to the Centre for Retail Research and VoucherCodes.co.uk.
It comes after a number of retailers reported record trading online on Black Friday (November 27), while footfall in shops fell year on year.
Amazon reported its busiest ever UK sales day on Friday, with more than 7.4 million items ordered.
Shop Direct, owner of Very and Littlewoods, also had a record day of trading, with sales up 36% on last year. It said it is now gearing up for Cyber Monday and “a week of promotional activity”.
Chief executive Alex Baldock said: “Online was the big winner this year. After last year’s hectic time on the high street, people went for the choice, ease and affordability of online instead.”
There was a 270% increase in ecommerce activity compared to the previous Friday, according to software firm PCA Predict.
It identified a 16% year-on-year rise in the number of consumers shopping online on Black Friday.
Meanwhile, footfall in shops over the Black Friday weekend fell by 9.6% year on year, according to research firm Springboard. Saturday and Sunday saw a 6.8% drop, and Black Friday a 4.5% fall.
However, Springboard pointed out there was still a “massive surge” compared with the previous week – up 19.9% on Friday, 7.4% on Saturday and 27.1% on Sunday.
Shoppers have been warned of an increased risk of cyber crime.
Dave Whitelegg, group head of security and payments at Capita, said: “People scouting around for cheap deals may end up on scam websites. It’s best to stick to reputable, well-known companies. If the price seems too good to be true, it usually is.”