With a fuelling dispute at King's Cross Deltics were being removed from north-bound services at York on the 18th February 1978, where they were fuelled and then stepped back onto the next north-bound train. After arrival at York on the 1S17 10:00 King's Cross - Edinburgh "The Flying Scotsman" service 55002 (D9002) "THE KING'S OWN YORKSHIRE LIGHT INFANTRY" drops onto the 1S21 11:00 King’s Cross - Edinburgh (ex 55016) following fuelling.