Simulations of thermal transport in plasmas important for inertial and magnetic confinement fusion often make the assumption of local thermodynamic equilibrium in calculating the heat flow. This neglects non-local effects, where heat is transported far from the local region under the influence of steep temperature gradients. My PhD project, under the supervision of Christopher Ridgers, involves improving and applying models for nonlocal transport in fluid codes by testing them against kinetic Vlasov-Fokker-Planck codes.