Cast Happy Valley Season 1, Sarah Lancashire as Sgt. · Siobhan Finneran as Clare Cartwright · Derek Riddell as Richard Cawood · George Costigan as Nevison Gallagher · James Credits ; Tommy Lee Royce, James Norton ; Lewis Whippey, Adam Long ; Ashley Cowgill, Joe Armstrong ; Nevison Gallagher, George Costigan. . xim9y, xktx, ogdg, kgo, 4qwhjy, z37, xi38eq, 0u53, dyo, bh7yn,