There is no such thing as a free market so you're talking bolloxThe EU are not worried about you, the UK has reasonably high standards, high enough to meet the requirements to import into the EU, all that is required is the correct documentation.
Most countries protect their home producers, the self proclaimed bastion of capitalism the USA uses a high rate of protection.
In a true free market UK agriculture would be decimated trying to compete with the highly efficient agricultural exporting nations.