The IGD's annual convention attracts the leading executives from the UK FMCG sector and last week they heard the likes of Tesco, Sainsbury's, Unilever and Heinz discuss the economy, multichannel strategies, labelling and innovation. Elsewhere, Wal-Mart outlined its expansion plans for next year, Mars called on the chocolate sector to co-operate more on sustainable cocoa (which it said would cost billions) and Kellogg revealed the possible financial impact of its latest recall.