Satus Locomotive Services (SLS) was a fictional company that operated on the network. According to the company, they stored, refurbished, preserved and converted rolling stock for use in Dovedale. The company also provided freight work and track work.
Satus Locomotive Services was based at the SLS Maintenance Yard in the Cosdale area of the map.

A new yard was being constructed prior to the closing of the company and was planned to be released as part of Version 2.0.
On 2 January 2025, an announcement was posted announcing the closure of the company, and hinting at a new separate one forming. This was due to Realthebritishgamer resigning from the game. Reasons for the resignation were for a lack of motivation and Jaiden disliking his company.[1] The company has since moved to the game Lakeside Rail, and was rebranded as Southernby Locomotive Services.
Multiple Unit Fleet
Locomotive Fleet
Former Fleet
Trains that formerly operated with the company but did not do so at the time of closure.