Tesco's clothing lines, run by former Arcadia chief executive of John Hoerner, are now the fastest growing brands in the UK. The chain has 1.8 per cent of the clothing market and Sir Terry Leahy believes the sky's the limit in terms of growth. He said: "Clothing has more than doubled in three years. It's a very profitable part of our business, but within the mass of Tesco it's only low single digits as a percentage of turnover. The non-food market is as big as the food market and so we see a really good opportunity to grow there."