The search giant, which first revealed plans to overhaul its home page last year, has replaced the traditional black bar across the top with a grey Google logo in the upper left corner.

This unfolds in a drop-down menu, which lists seven of its products including its social network Google+, Gmail and YouTube. A further eight products are then offered for visitors that click through on the ‘More’ tab.

The new design focuses on giving more prominence to its social network Google+, while ensuring a more consisent user experience across its product portfolio.

Google is yet to confirm a date for full roll-out. “We have rolled out the new Google bar to some users and are looking to broaden the rollout in the coming weeks,” said a Google spokeswoman.

The revamp marks Google’s biggest changes to its home page to date, and follows a major overhaul of YouTube. The video platform’s design revamp conicided with the launch of 100 original programming channels.

To view an introductory video of the changes to the Google search home page see below.