The full second stage line-up has also been revealed.
Motörhead's Phil Campbell has announced that he'll perform at this year's Planet Rockstock, taking place in Trecco Bay, Wales in December.
Phil Campbell's All Starr Band, which features the guitarist's sons Dane (Straight Lines) and Tyler (The People The Poet) as well as his eldest son Todd, will perform on the main stage on the Friday night (5th December).
Also announced this week are the final batch of bands for the event's second stage line-up; Aaron Keylock, Electric River, Fireroad, Gun Metal Gray, Liberty Lies, Touchstone, Vega, Lawless and Serpentine all join previously announced Purson, Skam, Preachers Son, Dante Fox and The Amorettes.
Planet Rockstock takes place at Park Dean Holiday Park, Trecco Bay, Wales from the 5th-7th December 2014. Main stage acts confirmed so far include Sunday night headliners Magnum, as well as Saturday night special guests Joe Elliott's Down 'n' Outz.
Tickets with weekend accomodation are on-sale now at planetrock.com/rockstock!