The "original" Hogwarts Express—the actual steam locomotive used in all eight Harry Potter films—is GWR 4900 Class 5972 Olton Hall, and in 2026, it is on permanent static display at the Warner Bros. Studio Tour London – The Making of Harry Potter in Leavesden. Visitors can walk along the platform and even step inside the refurbished carriages used during filming. It is important to distinguish this from the Jacobite Steam Train in the Scottish Highlands; while the Jacobite travels over the iconic Glenfinnan Viaduct (the "Harry Potter Bridge") and uses the same type of vintage carriages, it is not the specific engine seen in the movies. Additionally, for the 2026 launch of the new Harry Potter television series, a different heritage locomotive, No. 6989 Wightwick Hall, has been selected for filming. While multiple "replicas" exist in Universal Studios theme parks worldwide, the Olton Hall in Leavesden remains the definitive piece of cinematic history for fans wanting to see the "real" train.