It could, but this could happen to anybody anywhere in the world where low skilled work that matches the current crop of industrial robots skills is being done. It's mostly a matter of a one time capital expense or a lease agreement versus an extra employee on the books. And most of those jobs have already been automated, we're on the tail end of that until the next generation automation based on the present avalanche of developments comes on stream.
And that will have impact on a totally different level than the previous one which took many decades to complete.
So, nothing to do with brexit, nor with migrants.