Chief executive Sir Terry Leahy also revealed Tesco was barely a fifth of the way into an international expansion plan that will include
further inroads into Asia.
Asda came second after cutting the price of petrol, swiftly followed by other supermarkets and putting the onus on BP, Shell and Esso to do the same. It also dropped the price of its cheapest DVD player to £19.74.
At the other end of the table, Wm Morrison hit rock bottom with news of a three-day strike by distribution workers and yet another boardroom bust-up.
But budget clothes retailer Primark leapt into third place after sales beat forecasts and one of its jackets made the pages of Vogue.
Internet phone service provider Skype made the news after it was bought by eBay for £2.2bn. Traditional companies such as BT will
be wary of market erosion through free calls over the internet, analysts warned.
Reputation Monitor is compiled from Thomson Intermedia's National News Index, a measure of media sentiment that excludes stock market reports and passing mentions.