Also taking to the main stage earlier in the day on the Saturday will be Jamaica born reggae legend Jimmy Cliff who is best known for songs "You Can Get It If You Really Want", "Many Rivers to Cross" and for his cover of the song "I Can See Clearly Now".
Olly and Jimmy are the first of an estimated 200 acts to be announced for "GuilFest 2012" which will feature 8 stages of live music, the lineup is expected to be even better than last year which saw the likes of Razorlight, James Blunt, N-Dubz and Echo & the Bunnymen take to the stage.
To keep up with the latest news visit the Official GuilFest website at www.guilfest.co.uk or join their Facebook Page at www.facebook.com/GuilFest.
With the announcement of Olly and Jimmy, GuilFest is already off to a fantastic start, we'll try and keep you updated with any new acts being added to the lineup and hopefully bring you a review of the festival when it takes place.
To buy tickets for "GuilFest 2012" simply visit www.guilfest.co.uk/2012/buytickets.php.