Number 10 is final government office to switch to GOV.UK

All 24 ministerial offices have now moved to the new portal website

All 24 government departments have finally made the transition to the GOV.UK domain, following the addition yesterday of the websites for Number 10 Downing Street and the Deputy Prime Minister.

It comes just over six months after the first ministerial offices made the switchover as part of the coalition government's Digital by Default initiative. The Cabinet Office estimates the move to GOV.UK can save the taxpayer at least £50m.

"I'm proud to welcome the online home of No.10 Downing Street to GOV.UK, our flagship website for government," said Minister for the Cabinet Office, Francis Maude.

"Our digital by default vision for government is all about having online public services which are so good that people will choose to use them - that's how we will get ahead in the global race. At GOV.UK anyone can find out information about any Whitehall department, all in one place."

GOV.UK has won the Design Museum's International Design of the Year Award, Maude added.

The transfer of all government departments to GOV.UK means that the Direct.gov and Business Link websites are now officially obsolete. But hundreds of agencies and non-departmental public bodies still need to make the switchover, with the timetable for completion scheduled for March 2014.

GOV.UK is among a number of new digital services that the government claims will save £1.2bn by 2015, in addition to changing how the general public interacts with government services.

"Two years ago, there were an incredible 2,000 government websites. We've streamlined those into a single, central domain, GOV.UK, that is built entirely around the needs users have of government," said Mike Bracken, Executive Director for Government Digital Services.

"We are designing online services that put those needs first and make it easier to do things like pay car tax, complete tax returns, apply for the state pension, and much more. GOV.UK represents world-class public service delivery and a fundamental improvement in the way users interact with government."

The coalition government wants the UK to set a "worldwide standard for digital delivery" that other governments across the world will aspire to follow.