As party leaders head to their local polling stations, millions of people take to Facebook and Twitter to let their friends know they have voted, encouraging others to do the same.
The main party leaders were all out early, heading for their local polling stations with the media in attendance to record the event.
But many other voters were publicising their own involvement in the democratic process by making use of special features developed by social media outlets.
Almost a million and a half Facebook users had clicked on the site’s “I’m a voter” button, while over 55 thousand Twitter users who used the top-trending hashtag “IVoted”, saw an icon showing a box with a tick appear on their tweet.
Some UK voters reported queues at the ballot station, in one case allowing an undecided voter more time to ponder who to vote for: