Jenny Griffiths, Snap Fashion's 26-year-old founder, set up the website when she was shopping on a student budget and wanted to recreate the looks she saw in magazines.

"The idea with the Sale Tracker is you can pass a shop window and snap an outfit you like," she told Stylist. "Then if it does go in the sale the tracker will let people know by 12pm the next day."

Snap scans more than 170 retailers, including Topshop, Selfridges, French Connection and NET-A-PORTER, and currently has around 100,000 users.

Griffiths, a Computer Science graduate, said it took her almost three years to perfect the visual search aspect of the business. The effort has paid off and she now heads up a team of eight from her base in London.

"It's nice for people to search using pictures rather than just words," she said.

Words: Anna Pollitt. Images: Rex Features/Snap Fashion

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