I concur, sadly.
I attended a 3 hour briefing meeting on the upcoming legislation at the GPO yesterday.
After many slides, and admittedly a range of biscuits which I counted as 6 different types, we were then shown a questionnaire matrix to fill in – 23 worksheets in total, multiple Y/N questions on each worksheet.
They then explained that a separate worksheet needed to be filled in for each personal data type / source we held.
So far I have 21 but think I may be able to get rid of 4, there may well be more once I ask others.
This I should add is merely the fact finding element of the project before decisions are made what then needs to be done.
I believe your Teresa May has said the UK will fully undertake and abide by GDPR.