Unsurprisingly, Tesco, the UK's largest retailer has remained vocal in its opposition to plans for stronger checks on retail expansion, while Wal-Mart-owned Asda, its nearest rival in the country, has backed the proposals. Marks and Spencer, a UK retailer that suffered during the recession, struck an upbeat tone on its food business this week, while Finsbury Food Group, a key private-label bakery supplier, saw its shares slide after its profits slumped.