>> Raspberries, as essential to a British summer as the EU workers who pick them. But both could be in short supply soon, thanks to Brexit. This farm in Kent, Southern England, has grown fruit for 70 years. It relies on 1,200 seasonal laborers, mostly Bulgarians. But the plummeting pound has devalued their wages.
And the UK government is negotiating to control immigration from the European Union once it leaves. Britain is becoming a less appealing choice.>> When you want to kind of build your future, you want certainty. So you want to know exactly what is gonna happen. The Bulgarian and Romanian people are kind of thinking of going back because Bulgarians and Romanians gonna be not quickly but they're going up a bit.
>> Arrivals were down 17% this year, the Farmers Union said, and local people don't want jobs for just six months. If the shortage worsens, food prices could rise. I'm Lucy Fielder reporting for Reuters from Kent, the so called Garden of England, where farmers are heavily dependent on seasonal migrant labor.
They say if there isn't a good deal in two years time, they're going to have to start charging more than the British public are used to for produce such as summer fruits. And the impact is going to be felt around the British dining table. Tim Chambers is now looking to relocate part of the family farm to where labor is cheap and plentiful.
>> We are looking to start producing product in Poland under our own batch rather than as a partnership. And we think that although at the moment is not a necessity, we're planning for potential changes.>> For smaller farms, that's not an option. This salad grower down the road employs 120 seasonal workers.
The U.K. had six month labor permits for foreign students but the scheme shut down three years ago. Nick Atwell says there'll have to be another one. If it gets much harder to recruit, farms like this will close.>> I really do think that it's unrealistic now because it's dragged for so long.
They're gonna have a scheme in place in time, and that the political instability that's going on is just pushing back any real action being taken, and farmers are gonna potentially be staring over the cliff face in 2019.>> Some may have little appetite for the permits since many Brexiteers want to slash immigration.
But the country's food security will depend on them, farmers say. Otherwise, imports will replace food left to rot in UK fields.