The average online spend in the run up to Valentine's Day was 65% higher in 2010 than in 2009, says Coremetrics.
The average online order in the period from 1 February to 14 February came to £150.15, compared to an average of £90.73 for the same period in 2009.
Coremetrics analysed the online transactions of 131 of its UK clients' websites in the fortnight leading up to Valentine's Day, including customers such as Figleaves.com, Interflora, La Senza and Net-a-Porter.
"It has been an undeniably tough 18 months for the retail sector across the globe," says Coremetrics' Richard Sheppard. "However, today's results should bring renewed confidence to the retail sector. Consumers are looking to spend again, meaning competition to attract new clients is hotting up. Retailers need to take heed of today's' results and, moving forward, ensure they are targeting their audiences with the most innovative techniques that will drive traffic to their sites and ensure competitive edge of their respective rivals."