Class 31 - BR Blue - 3144731447 BR blueRecognising the calls for a mid 1980s plain blue Class 31 4 is 31447, converted from 31295 in July 1984. This had been an early exile to the Western Region in 1973 while still carrying its original (D)5828 number and BR green livery. However, unlike most of its colleagues it found itself back in East Anglia after just a couple of years before it was transferred to Toton in October 1984, its last allocation before receiving the call to