Prime Minister Manmohan Singh is among the top world leaders who have been invited for the Second G20 Summit to be held in London in April, which will discuss ways and means to reinvigorate growth in the wake of the global economic crisis.

British Prime Minister Gordon Brown has sent formal invitations to the world leaders.

The global economic challenges we face need to be met with decisive action if we are to secure jobs, restore confidence and reinvigorate growth," Brown said on Friday.

Besides leaders from G20 nations, Chair of the New Partnership for Africa's Development, the Chair of the Association of South East Asian Nations and the President of the EU Commission have also been invited for the summit to be held in London on April 2.

The chairman of the African Union Commission will also attend. This is the second meeting of the grouping after the one in Washington on November 15 hosted by the then US President George W Bush.

"To be effective in addressing this global crisis we have to bring in partners from across the world. For that reason I have issued invitations to the leaders of G20 countries and the Chairs of NEPAD, ASEAN and the African Union will ensure their  interests are not forgotten and their voices are heard," Brown said.