The Won't Go Quietly musician will make his second appearance in two years at the Weston-Super-Mare event.
Organisers used the T4 Twitter account to announce a host of lineup additions yesterday evening.
Katy B, former America's Got Talent star Alexis Jordan and grime MC Wretch 32 will also join Jessie J, The Wanted and The View, who were confirmed for the gig last month.
Fans were encouraged to "stay tuned" to the social networking site for further announcements in the coming weeks.
Last year's event featured performances from artists including JLS, Dizzee Rascal, Alexandra Burke, Scouting For Girls and Jedward.
Tickets for this year's event are on sale now.
Watch our interview with Example from last year's T4 On The Beach below:
> Click here for our complete coverage of previous T4 On The Beach gigs