P. Sayer, Anthony: - ANTHONY SAYER is a life-long railway enthusiast with an interest in the history of the early British diesel and electric locomotive classes. This is the author's fifth book in the "Locomotive Portfolio" series, following on from the North British Type 2 (Classes 21 & 29), the Metropolitan-Vickers Type 2 (Class 28), the Clayton Type 1 (Class 17) and BTH/NBL Type 1 (Classes 15 & 16) books published between 2019 and 2021. Anthony lives in the north-east of England and has now retired after 37 years in the steel industry with responsibilities in both transport planning and supply-chain logistics.