The Gloucestershire farmer is questioning why we are importing processed meat if we don't know where it's come from. It comes after horse meat was found in a number of products sold in supermarkets. Most recently, Findus lasagnes were found to contain 100 per cent horse meat.
Charles Mann says that if overseas produce doesn't comply with the high welfare and traceability levels of British meat, then it should not be brought into the country. He also says people should buy from butchers where they can trust the source.
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The fight for 10 Downing Street kicks off today with the dissolution of Parliament - and the South West is a key battleground for votes.
The Liberal Democrats won the Bath constituency in 2010. With the current MP standing down, the Conservatives are targeting this seat.
Bridgwater and West Somerset is considered a Conservative safe seat - in 2010 they had a majority of over 9,000 votes.