The drugs company my dad works for has said business will not be hit but vote remain anyways. I'm self employed so won't feel to much a difference hopefully.
Depends on what part of the industry he's in, the EMA is UK based as is the Pharma part of the Unified Patent Court. Both would have to move in the event of an brexit, and since the UKs Medicines and Healthcare Products Regulatory Agency is basically a shell which cedes most of it's regulatory function to the EMA so it would have to be rebuilt and a new UK certification process created (I imagine that initially that would mirror the current EMA rules but naturally overtime it would drift leading to two certification paths drug manufacturers would have to take instead of the current model which is essential just EMA certification)