People’s online habits are changing as the credit crunch begins to bite. Hitwise, which monitors the internet habits of 8.4 million people in the UK, has discovered that increasingly people are using price comparison websites, downloading sales vouchers, looking for moneysaving tips and shopping at online budget stores.

Robin Goad, the director of research for Hitwise in the UK, said that there had been a trebling in the number of people searching online using terms containing the word “sales” this summer, compared with last year. Meanwhile, websites offering sales vouchers giving discounts at popular stores are the fastest-growing retail internet phenomenon. Since the first such websites appeared last September, they have gained in popularity. Mr Goad said: “People are now specifically going to a voucher site before they start their online shopping to see what vouchers are available.”

Online shopping is also rapidly changing, with budget supermarkets undergoing the fastest growth. Tesco remains the dominant force in the market, although growth has almost plateaued at 0.8 per cent in the past year. Hitwise figures showed that Aldi had grown by 235.6 per cent since 2005, Lidl by 119.5 per cent and Morrisons by 114.8 per cent. Morrisons has enjoyed the fastest growth of any online supermarket in the past year - 52.6 per cent.

Mr Goad said: “Aldi is growing very fast and is now the third-biggest online supermarket. It has been growing pretty significantly over the last three years. You do hear a lot of stories about hard-up middle-class people who are having to go to Aldi to buy their pickled peppers, or whatever, but actually the reason Aldi has grown online is because their core customer base is going there more.”

However, middle-class shoppers are going to price comparison websites and money saving forum's like Martin Lewis’s moneysavingexpert.com - the fastest-growing site of its type.

“The people going to this site are the middle classes - the people who go to National Trust properties, shop at M&S and read the Daily Mail, so pretty much middle-of-the-road people who are feeling the pinch and spending more time on price comparison sites,” Mr Goad said.

Clicks on electricity and gas companies’ websites have more than doubled in the past year, too, as more people search the internet using terms such as “efficiency”. “The people searching for ‘efficiency’ then go to websites providing price comparisons and DIY retailers,” he said.

Not surprisingly, people are not visiting property websites as much as as last year but instead are looking to improve their homes.

According to Mr Goad: “People are going less to property websites, but more are now going to house and garden retailers looking to do up their houses. It’s not just DIY retailers, but also furniture retailers are increasing their share of online traffic.”

Times Recommends

• Lies and cover-up at MG Rover exposed by report
• High oil prices push manufacturing costs up
• Primark founder steps down as chief executive