Delia Smith's representatives have hit back at newspaper claims that she champions New Zealand lamb over British.

The Daily Mail criticised the celebrity cook, claiming an advertorial on her official website said New Zealand meat was best. However, Jo Hill, the website's editor said the newspaper had been mistaken in thinking the ad reflected Smith's views.

"It's ridiculous to suggest that Delia would favour New Zealand lamb over British," said Hill. "On the site, in the editorial pages, Delia refers to British lamb as the best in the world."