It would be a good idea for you to check.
Last year I had an investigation which involved something I was allergic to. I told them and they ignored it and I had a reaction to it. When I complained I was sent a letter saying that my records did not have a note of that allergy. I do not know why that is because it was not due to my not telling them over the years, and it was a great shock that they could disbelieve me because it was not in writing in my records.