Give people ability to require major social media platforms to delete information held about them at the age of 18: Pending
Commonly known as the 'right to be forgotten'.

The Governement introduced a new data protection bill into parliament called the Data Protection Bill in September 2017. This Bill will include a so called 'right to be forgotten' as laid out in the Gov.UK article.

Category: Other
Source: Manifesto - Page 79
Reference 1: Progress of the bill
Reference 2: Gov.UK Article