Up to one in five Chinese eateries could be selling meat or illegal meat . Charity says it is often sold on menu or only smoked if requested . Loophole lets customers bring 20 kg of meat into soup for personal consumption .
Up to one in five Chinese eateries could be selling soup using illegal meat . Charity says it is often disguised on menu or only offered if requested . Loophole lets people bring 20 kg of meat into UK for personal consumption .