Would you pick fruit and veg for very low pay? No? We have a problem - the Guardian

In a recent report, the chairman of a large produce firm, said that "no British person wants a seasonal job working in the fields. They want permanent jobs or jobs that are not quite as taxing physically."

So companies like this rely on up to 70,000 foreign workers to pick, sort and pack fruit and vegetables. They are more willing to get their hands dirty for low pay. The same is the case in many other British industries. Not many of us want to be employed cleaning up a slaughter house, for example, so eastern European workers are vital.

But this arrangement is now seriously at risk following the Brexit vote. The British Growers Association has warned that if these seasonal workers are not given special permits to enter the country, the whole industry will be in dire straits. Labour shortages would probably force producers to close or relocate overseas.

This might seem like just another economic problem. But it holds implications for national security according to Erica Consterdine from the University of Sussex's Centre for Migration Research. For her, the failure to consider the importance of these foreign seasonal workers in a post-Brexit world means that "it's looking pretty bad in terms of the security of the food supply chain. It would be disastrous."