Sales of the Young’s Seafood Jamie Oliver range have dipped to a level seen before a television advertising campaign in February, according to data from Kantar Wordpanel.

The data shows sales of the Jamie Oliver range, launched in August 2011, were around £480,000 (€599,301/$751,344) for the four weeks up to Jan. 22, before the adverts.

Sales peaked at £1.75 million (€2.2 million/$2.7 million) for the four weeks ending Feb. 19, during the adverts, but then dived to less than £500,000(€624,272/$782,650) for the four weeks ending April 15.

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