The Explanatory Notes to the Data Protection Act 2018, prepared by the Department for Digital, Culture, Media and Sport and the Home Office in order to assist the reader in understanding the Act. The Explanatory Notes do not form part of the Act and have not been endorsed by Parliament.
The UK Government's technical notice, relating to data protection risks if there is no Brexit deal.
European Data Protection Board - guidelines on various matters, including
DPOs, data protection impact assessments, breach notification, automated decision-making and profiling
A collection of official documents which have been published in the context of the reform process of European data protection law (on the website of De Lege Data). Many of these documents precede the GDPR. They include earlier drafts of parts of the GDPR.
Marked-up version of the GDPR - The Department for Digital, Culture, Media and Sport has prepared, for illustrative purposes,
a marked-up version of the GDPR (a "Keeling Schedule")
to assist the reader of the Act to understand the changes to the General
Data Protection Regulation ((EU) 2016/679), which are made by Schedule 6
to the Act (as in force on 25 May 2018), for "the applied GDPR".
(This applies only to data processing in the course of an activity that
is not subject to EU law. Where the activity is subject to EU law the
omissions, insertions and substitutions as set out in the Keeling Schedule
do not apply.)