The Southern Railway had the smallest contingent of S160 allocations, with only 6 locomotives sent on loan. This was due to the SR electrification scheme, meaning that the railway had a healthy surplus of steam locomotives available for wartime traffic, allowing other regions to take more S160 locomotives. They arrived on the SR relatively late, just ready for the preparations for the D-Day landings. Many S160 locomotives were commissioned in SR works and allowed to run-in on SR metals before being dispatched to other regions.
No.2356 was transferred to Germany in September 1944 and worked from the Mainz-Bischofsheim shed before moving to Austria as OBB 956.123.