Worries GM crops and less vetted food will be forced on dinner plates . Chef spoke to Business Secretary Vince Cable about 'massive concerns ' US farmers often rear beef on vast factory farm feed lots rather than fields . Laws allow them to pump animals with growth hormones . Comment:
Worries GM crops and less vetted food will be forced on dinner plates . Chef spoke to Business Secretary Vince Cable about 'massive concerns ' US farmers often rear beef on vast factory farm feed lots rather than fields . Laws allow them to pump animals with growth hormones . Concerns come as UK and US negotiate a new free trade pact .