article: List of British Rail power classifications
links: British Rail Class 31 British Rail Class 37 British Rail Class 26 British Rail Class 57 British Rail Class 24 British Rail Class 17 British Rail Class 15 British Rail Class 59 British Rail Class 58 British Rail Class 46 British Rail Class 68 British Rail Class 35 British Rail Class 21 British Rail Class 25 British Rail Class 22 British Rail Class 50 British Rail Class 70 (diesel) British Rail Class 42 British Rail Class 29 British Rail Class 20 British Rail Class 27 British Rail Class 56 British Rail Class 48 British Rail British Rail Class 28 British Rail Class 67 British Rail Class 14 British Rail Class 33 British Rail Class 43 (Warship Class) British Rail Class 52 British Rail Class 40 British Rail Class 60 British Transport Commission British Rail Class 55 British Rail Class 66 British Rail Class 23 British Rail Class 44 British Rail Class 53 British Rail Class 47 British Rail Class 45 British Rail Class 16