Ein Swyddog Diogelu Data yw Louise Byers. Os hoffech gysylltu â hi, gallwch wneud hynny drwy ddefnyddio'r ffurflen isod neu drwy ein cyfeiriad post . Nodwch yr amlen 'Swyddog Diogelu Data'.

This form can also be used to submit complaints about how the ICO has handled your personal information as a ‘controller’. For example, if you are dissatisfied with:

• the way we’ve responded to your subject access request (SAR), or other rights request;
• the security measures we’ve used to store your information (eg if you’ve been impacted by a data breach); or
• how we’ve collected or used your personal information (eg where we’ve stored it, how long we’ve kept it for, or its accuracy). 

Further information can be found in our guide to complaints about the ICO’s handling of your personal information.