The Commission has determined that a county constituency be created from:The Cardiff North UK Parliamentary constituency,and:The Cardiff East UK Parliamentary constituency.
Mae’r Comisiwn wedi penderfynu creu etholaeth sirol o’r canlynol:Etholaeth Seneddol y Deyrnas Unedig Gogledd Caerdydd,ac:Etholaeth Seneddol y Deyrnas Unedig Dwyrain Caerdydd.