The GDPR has direct effect across all EU member states and, as such, would apply in the UK without the need for additional legislation. Nevertheless,
at the time of writing, a Data Protection Bill has almost completed its passage through the UK Parliament.* The Bill goes beyond just dealing with GDPR and this point is helpfully explained by the Information Commissioner's Office - HERE. For instance, the EU Data Protection Directive 2016/680 (Law Enforcement Directive) is being transposed into domestic UK law. The Directive complements the General Data Protection Regulation (GDPR) and Part 3 of the Bill sets out the requirements for the processing of personal data for criminal ‘law enforcement purposes.'
GDPR - Here you can find the official PDF of the Regulation (EU) 2016/679 (General Data Protection Regulation) as a neatly arranged website. All Articles of the GDPR are linked with suitable recitals.
* Data Protection Act from 23rd May 2018.
Information Commissioner's Office:
Guide to the GDPR
Making Data Protection your business - Your customers and employees need to be able to trust you with their personal information or, as the law calls it, their personal data.