Seven million jobs were advertised online in 2009, claims the manifesto

UK digital champion Martha Lane Fox has announced plans to get everybody of working age in Britain online by the end of the current Parliament.

There are currently 10 million Britons who are not on the net, she claims.

She also says no-one should reach retirement age without gaining experience of using the web.

Ms Lane Fox will present her manifesto, Networked Nation, at Downing Street later. Prime Minister David Cameron has already praised her goals.

"In the internet age, we need to ensure that people aren't being left behind as more and more services and business move online," he said.

"Promoting digital inclusion is essential for a dynamic modern economy and can help to make government more efficient and effective."

Ms Lane Fox said the government, businesses and charities needed to work together to "deliver positive social change" by getting more people using the internet.

"By getting more people online, everybody wins," she said.

She called for the government to install "digital champions" in every local authority, public library and Jobcentre Plus office by the end of 2010.

Her website, Race Online 2012, is asking for people already online to sign up to volunteer, donate money or equipment, take part in organising events or contribute their own ideas about how to get others connected.

The BBC's technology correspondent Rory Cellan-Jones warned that finding the cash to support the aims of Network Nation would be a challenge.

"The campaign has set itself an extraordinarily ambitious target – and at a time when government money is in very short supply," he said.

"With spending on IT in schools already being slashed, and doubts over funding for public internet access schemes, Martha Lane Fox will have to look to the private sector to do much of the work.

"And one other problem – amongst those targeted by this mission, a stubborn minority continue to see few reasons why they should bother with the internet."