The band return to their roots this Christmas
Artists including Chappell Roan, Khruangbin and Wet Leg were announced last month
Others lined-up for the Southsea festival include Michael Kiwanuka, Travis, The Last Dinner Party and Madness
They join previously announced artists including Stormzy, Fontaines D.C. and Beth Gibbons
The likes of CMAT, Nova Twins and Yard Act will appear at the May festival next year
"These shows are gonna be fuckin deadly"
“What, did you think you were coming to see professionals?”
The upcoming shows will mark the Irish folk band's biggest UK shows to date
The four-day festival will take place on the island in September