- Video report by ITV News Anglia's Malcolm Robertson
Immigration is one of the key elements of Brexit, with the Prime Minister saying she cannot guarantee EU citizens will be allowed to stay once Britain leaves Europe.
Farmers in the East of England are concerned the refusal to guarantee their rights could affect affect production and ultimately see the price of the food on our plate go up.
Local growers fear they could go out of business without help from seasonal workers from Eastern Europe.
Andy Allen's immediate worry is what Storm Doris might do to the poly tunnels protecting the asparagus on his Norfolk farm.
His longer term concern is how he'd begin to harvest his crop without the dozens of migrant workers he relies on every year.
The fear is, with Britain leaving the EU, what will happen to the thousands of seasonal workers needed in this region.
Andy wants the Government to be aware of just how vital migrant workers are to this country.
A weak pound, low unemployment and fears among workers in Eastern Europe that they're no longer welcome in Britain, have made it a lot more difficult for farmers and growers to recruit the staff they rely on keep their businesses going.
Andy also has to explain to his overseas workers that he doesn't know whether they will be able to make their annual visit in the future.
Sever Ianc, who's from Romania has been coming to the UK for 12 years.
Andrew Wagstaff, a potato farmer from Chatteris in Cambridgeshire, also has huge concerns about the future.
He says his business couldn't survive without seasonal labour from Eastern Europe.
At the National Farmers' Union annual conference, Environment Minister Andrea Leadsom was lobbied about the potential repercussions.