The UK government has introduced the logo and livery for GBR, signifying a major move in its agenda to bring the railways under public control.
The updated branding uses a Union Flag-inspired palette to mirror the UK flag and will be used on GBR trains, at stations, and across its website and app.
Significantly, the emblem is the distinctive twin-arrow logo historically used by National Rail and originally introduced in the mid-20th century for the former state operator.
The phased introduction of the branding, which was created by the department, is set to occur gradually.
Travellers are scheduled to begin seeing the newly-branded trains across the network from the coming spring.
Throughout December, the design will be displayed at prominent railway stations, including Manchester Piccadilly.
The proposed law, which will allow the formation of GBR, is currently moving through the legislative process.
The administration has said it is renationalising the railways so the network is "owned by the public, delivering for the passengers, not for profit."
Great British Railways will bring the running of passenger trains and infrastructure under a unified structure.
The government has said it will merge 17 different entities and "cut through the notorious bureaucracy and accountability gap that has long affected the railways."
The introduction of Great British Railways will also include a new app, which will allow customers to view train times and purchase tickets without booking fees.
Disabled travellers will also be able to use the application to book support.
Multiple operators had earlier been nationalised under the former government, such as TPE.
There are currently seven operating companies already in public control, representing about a third of rail travel.
In the last twelve months, South Western Railway have been nationalised, with more anticipated to follow in the coming years.
"This is more than a paint job," said the Transport Secretary. It signifies "a new railway, casting off the frustrations of the previous system and focused solely on providing a reliable service for the public."
Rail figures have acknowledged the focus to bettering the passenger experience.
"The industry will continue to work closely with industry partners to support a seamless handover to GBR," one executive noted.
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