Butcher and his Speedworks Motorsport Toyota Corolla GR Sport led from start to finish, but Hill was breathing down his neck throughout the 10 laps of green-flag racing following a mid-race safety-car interlude.
The crisp conditions allowed Butcher to make his escape during the early laps, while Hill and Adam Morgan, second and third on the grid, toiled to warm up the tyres on their rear-wheel-drive BMW 330e M Sports.
