Neville is the number 33010 black tender engine.
Neville is an SR Bulleid Q1 locomotive, which were often referred to as "ugly ducklings". The specific engine Neville is based on (33010) was scrapped in 1964. Unlike his prototype, however, Neville is missing the crankshaft that connects to the front of his siderods.
Neville is painted in the British Railway's plain unlined black livery without the BR logo. He has the number 33010.