On the 12th May 1979 55014 (D9014) "THE DUKE OF WELLINGTON'S REGIMENT" takes the curve at Chaloners Whin Junction, south of York, with the 1S31 15:00 King's Cross - Berwick service.

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	12/05/79 - 1S31 15:00 King’s Cross - Berwick. Profile of the Deltics: Page 25 & 96 (Page 25 credited as 1L12).