The Transport Department has introduced the logo and livery for GBR, representing a key stride in its agenda to bring the railways under public control.
The updated livery features a Union Flag-inspired palette to mirror the national flag and will be rolled out on locomotives, at terminals, and across its website and app.
Notably, the symbol is the recognisable twin-arrow design historically used by National Rail and originally created in the mid-20th century for the former state operator.
The rollout of the new look, which was created in-house, is scheduled to take place gradually.
Passengers are set to begin noticing the newly-branded trains across the UK rail network from the coming spring.
During December, the design will be exhibited at prominent stations, such as Leeds City.
The legislation, which will enable the creation of Great British Railways, is currently progressing through the legislative process.
The government has said it is taking control of the railways so the system is "owned by the public, delivering for the public, not for corporate interests."
Great British Railways will bring the operation of train services and infrastructure under a unified structure.
The government has stated it will merge 17 different bodies and "cut through the notorious bureaucracy and accountability gap that continues to plague the railways."
The introduction of GBR will also feature a comprehensive app, which will enable passengers to check schedules and purchase tickets free from booking fees.
Accessibility users will also be able to use the application to request help.
Multiple franchises had already been nationalised under the outgoing government, including Northern.
There are currently seven operating companies now in public control, covering about a third of journeys.
In the past year, Greater Anglia have been brought into public ownership, with more likely to be added in the coming years.
"This is not simply a new logo," commented the Transport Secretary. It symbolises "a transformed service, leaving behind the issues of the previous system and concentrated solely on offering a proper passenger-focused service."
Rail leaders have acknowledged the pledge to enhancing the passenger experience.
"We will continue to cooperate with industry partners to support a smooth changeover to Great British Railways," a representative said.
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