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A new UK freight locomotive is coming to Train Sim World! This time, it’s all electric, with the introduction of the Class 90 by Alan Thomson Simulation on Tuesday March 24th next week!
The Story So Far...
We first revealed the Class 90 at the end of 2025 and followed up with further images in our Season of Reveals.
This is the first loco Add-on by Alan Thomson Simulation, following their first route Add-on with Manchester Airport Commuter.
ATS have kept us updated with their progress on the Class 90 over the last few months, building the locomotive with assistance from others in the TSW Community.
The Locomotive
Derived from advancing British Rail AC technology, and originally being described as the Class 87/2, the Class 90 was designed to get the UK’s electric rolling stock roster up to speed, as widespread electrification had outpaced locomotive construction. The 87/2 scheme was seen as a way of quickly procuring an additional fleet of modernised locos based on a successful frame but was reclassified when the design changed significantly. The resulting fleet of 50 locos being one of the most iconic electric designs built during the BR era.
This mixed-traffic loco has been a staple of the UK rail network for over 30 years and whether hauling passenger trains at 110 mph or container freight at 75 mph, the Class 90 is equally at home. Powered by thyristor control, it was a modernised successor to the Class 87, offering improved solid-state traction and reliability.
Drivers often praise the Class 90 for its comfortable, ergonomic cabs and helpful driver aids like Speed Set, which maintains a set speed and reduces workload—especially on long runs.
This Add-on will highlight its freight capabilities, ensuring you can run to time up and down the West Coast Main Line without interfering with higher-priority traffic.
Development of the Class 90
ATS stated in previous Roadmap articles:
“Members of the our team have taken part in a dedicated recording session to capture the full sound set for the Class 90, ensuring an authentic audio experience. Gameplay development has also been led by ATS, with SimuGraph work progressing in close collaboration with the excellent team at AND Games."
Livery Variants
The Class 90 loco Add-on includes the following variants:
DB Cargo (red)
DB Cargo (blue)
Freightliner (grey)
Freightliner (old / green)
Freightliner (new / Powerhaul)
These all come with their own minor differences in details, including the relevant locomotive numbers for each livery.
“Livery creation has been handled by IMBUE, who’ve delivered a diverse and high-quality set of liveries that complement the pack’s flexible service mode. Players will be able to choose the freight run that suits them best, adding replay-ability and variety."
Systems and Interactive Features
The cab of the Class 90 will have elements familiar to players of other trains in Train Sim World. The throttle and brake handles are similar in design to that found in the HST, as are some of the dials, yet accompanying these are traction motor gauges like those found in the Class 87 and 86 locomotives.
Being a freight locomotive, some switches to the left of the driver’s seat and the interactive operator interface for train length are like those seen in the Class 66. Players may also notice what look like shunting controls in cab by the door. In reality, these have been isolated out of use for many years and cannot be interacted with.
UK Safety Systems are fully modelled, including TPWS, AWS
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