Under the new UK-DPA 2018 and GDPR, both of which come into force on Friday 25th May, this method of consent to data collection/sharing will be illegal in the UK and Europe. I've been looking into them over last couple of weeks and the inability to untick the boxes would count as an invalid method of consent. At the bottom of this ICO article there is a list of what makes consent invalid, among others these include:   https://ico.org.uk/for-organisations/guide-to-the-genera