"British taxpayers have an absolute right to know how much of their money was spent," Emily Thornberry said.
The government said there was no evidence of data being used unlawfully – but campaigners accuse ministers of "brushing aside" serious errors over GDPR.
Cookies and consent – two words to know about when using health apps and websites.
So, now that I’ve scared you, the question is what can you do to protect yourself?
Over half of us don't trust social media companies with the data we give them.
After around six weeks of emails, there's broad consensus that it's gotten pretty annoying - it's going to get worse
GDPR is forcing some companies to either block users or shut down entirely.
The five things you need to know about politics today