Both acts bolster the Friday night bill.
As confirmed by Paul Anthony on Planet Rock Breakfast, blues-rock guitarist and singer/songwriter Joanne Shaw Taylor will be performing at this year's Planet Rockstock.
She'll play as main support to the yet-to-be-announced headliner on Friday 5th December on the main stage.
Also announced are Cambridge rockers The Treatment, who will be kicking off the action on the same stage that night.
Planet Rockstock 2014 takes place from the 5th - 7th December at Trecco Bay, Porthcawl, Wales.