While it's always been important to ensure that survey data is treated properly, the arrival of the GDPR (General Data Protection Regulation) in May 2018 has raised the profile of this issue - and has tightened up the requirements.
If you're collecting data about people, or which is sensitive for any other reason, you'll need think through how you're going to handle it, so you can be sure you're doing everything that's needed. We can provide some pointers on what you need to consider, and on how to make staying compliant as straightforward as possible.