Police arrested the men after it emerged a significant amount of horse meat containing the painkiller "bute" could have been entering the food chain for some time.
Authorities in Britain and France are trying to trace the carcasses of six horses contaminated with bute - which were slaughtered in a UK abattoir and may have entered the human food chain across the Channel.
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A survey by ITV News found Tory activists are surprisingly supportive of the Prime Minister, despite the result of the General Election.
Another mild night
Tracey Crouch says she hopes the Football Association learns lessons from the "sorry saga" of harassment and bullying accusations.