In collaboration with Virgin Media, TalkTalk and Cisco, Fujitsu intends to build a fibre optic network providing superfast broadband in hard-to-reach rural areas.
According to Fujitsu, the network will enable community and local groups to access a proportion of funds earmarked by the government to drive superfast broadband investment in rural communities. The network will also provide a "groundbreaking and innovative alternative" to the fibre infrastructure operated by BT.
Last December, culture secretary Jeremy Hunt unveiled plans for creating a superfast broadband network serving every community in the UK by 2015. The coalition has set aside around £530m for the funding of broadband rollout projects, with a portion coming from surplus cash from the BBC's digital TV switchover help scheme.
Fujitsu's "open access wholesale network" will be underpinned by communications technology from Cisco. Virgin Media and TalkTalk intend to use the network to bring a range of next generation services to 5m homes in rural areas, including entertainment, remote healthcare, education and government services. The network will also be open to other internet service providers on wholesale terms.
In the majority of areas, Fujitsu will run fibre to the home (FTTH) connectivity rather than just linking up local street cabinets. As a result, the network will be one gigabit (1Gbps) symmetric capable, with the potential to support a staggering 10Gbps service.
Deployment will be managed across a wide range of underground and overhead infrastructure points, in a strategy made possible by Ofcom's recent move to force BT Openreach to open up its infrastructure to other companies on fair, reasonable and non-discriminatory terms.
Welcoming the announcement, communication minister Ed Vaizey said: "Superfast broadband is already helping businesses grow and improving the lives of those able to access it. But many rural and hard-to-reach areas are missing out.
"The whole of the UK should be able to share in the benefits of broadband and we are determined to make that happen by the end of the parliament [in 2015]. That is why the government is investing over £500m in taking superfast broadband to everyone."
He added: "Creating [Fujitsu's] superfast broadband network will help improve the economic and social prospects of the homes and businesses where high-speed internet access remains just a dream."
Duncan Tait, chief executive of Fujitsu UK and Ireland, said that this represents a "unique opportunity" to re-establish Fujitsu as a world leader in advanced fibre networks.
"If done correctly this can be a key vehicle to accelerate recovery in the UK and bring genuine choice to generations of communities starved of participating fully in the UK economy," said Tait.
"We believe our approach, in collaboration with these major industry leaders, will provide a future-proofed network for at least the next 20 to 30 years."
Virgin Media chief executive Neil Berkett added: "Virgin Media's involvement in this groundbreaking project is part of our ongoing drive to rapidly create a step change in the UK's digital evolution.
"Fujitsu's vision and global expertise provides an opportunity to change the game in terms of broadband provision in parts of the UK that are otherwise being left behind. We now have a once in a lifetime opportunity to make the ambition of a digitally-enabled society a reality beyond the country's cities and towns."