The formation history of massive cluster galaxies as revealed by CARLA by Cooke, EA, Hatch, NA, Rettura, A, Wylezalek, D, Galametz, A, Stern, D, Brodwin, M, Muldrew, SI, Almaini, O, Conselice, CJ, Eisenhardt, PR, Hartley, WG, Jarvis, M, Seymour, N, Stanford, SA