The News of the World claimed this week it had smashed a conman's £6bn smear campaign against Tesco and Asda. The conman faked emails between senior employees at the supermarkets, which said the two employees were discussing a future rise in bread prices and trying to fix prices. The emails were uncovered by the newspaper as fakes. A man has been arrested over the incident.

The Guardian put the cheap price of chicken under the spotlight with a full- page feature identifying that retailers such as Asda were selling whole birds for just £2. While just about every foodstuff had increased its real price by 50-100% in the past 20 years, chicken had increased by 15%, which meant in real terms it may have dropped 50% in price in that time.

Tesco's crab spread got a pasting in the Mirror after its ingredients revealed it contained 28% mackerel, 25% cod and just 25% crab meat. The paper added that in blind tests, 58% of people thought the crab paste tasted of mackerel and only 14% thought it tasted of crab, while another 28% said it tasted of neither.

The Telegraph predicted Delta Two, the Qatari-backed investment fund currently circling Sainsbury's, would be unlikely to change the structure of its £10.6bn offer despite concerns about the level of debt in the deal. The paper said Delta Two was playing "hardball" with Sainsbury's and would ignore urges by the retailer's chairman Sir Philip Hampton to increase the £4.6bn equity portion of its offer.

Babyfood manufacturer SMA Nutrition has been accused of breaching the ban on advertising formula milk for babies after this week's edition of OK! magazine featured the model Jordan feeding her three-week old daughter with a branded bottle of its formula milk. The page next to the picture carried an advert for SMA's 'follow on' milk for older babies, the only type of formula allowed to be advertised, said The Times.