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21:48, 19 September 2022 'The English Electric Type 4 (later BR Class 50) diesel locomotive was the last main-line diesel locomotive designed for BR.' Would the 56/58/60 not fall into this category?--[[User:Patrick Hearn|Patrick Hearn]] ([[User talk:Patrick Hearn|talk]]) 21:48, 19 September 2022 (UTC)