Could the data undergo anonymisation before you receive it?
Regardless of whether it ends up being effectively anonymised or not before it gets to you
What do you mean by “anonymisation”?
Anonymisation covers the techniques that can be applied to personal data to reduce the likelihood of being able to identify individuals from it. There are numerous anonymisation techniques, including (but not limited to) removal of direct identifiers (names, addresses, etc), aggregation, addition of noise, etc.