The first two production Deltics line up at King's Cross on the 19th July 1962. D9001 "ST. PADDY" waits with the 1A16 10:00 King's Cross - Edinburgh "The Flying Scotsman" service whilst D9000 has charge of 1N10 10:20 King's Cross - Bradford.
From Leeds D9000 would continue north with the 1S57 12:00 King's Cross - Glasgow Queen St "The Queen of Scots Pullman" service.