The right to rectification
(Articles 16 & 19 of the GDPR)
If your personal data is inaccurate, you have the right to have the data rectified, by the controller, without undue delay.
If your personal data is incomplete, you have the right to have data completed, including by means of providing supplementary information.
The right of rectification is restricted in certain circumstances under Section 60 of the Data Protection Act 2018, which provides for restrictions that are necessary for important objectives of public interest, and by Section 43 of the Act which seeks to balance the right of rectification with the right of freedom of expression and information. More information about the restriction of individual rights can be found here.