No.1604 had the honour of being the first S160 to be displayed publicly when on the 11th December 1942 it was exhibited at Paddington station and officially handed over to Lord Leathers, Minister of War Transport, by Colonel N.A. Ryan, Chief of Transportation, US Army. Overall, the GWR had the largest number of S160 locomotives on loan, with a total of 174 locomotives operating across the GWR network. No.1604 was allocated to Newport Ebbw Junction Shed prior to transfer to the continent and use by the SNCB before scrapping in 1946/7.