In his Monthly Insights for September, Jim O’Neill, Chairman Goldman Sachs Asset Management is out with a revised forecast for leading economies of the world:

We revised down our UK growth forecast for 2012 to -0.2%, from 0.2%, in line with consensus. We made two downward revisions in the BRICs. For China, we reduced our 2012 growth forecast to 7.4% from 8.2%, which is now below consensus at 7.9%. We also downgraded India, to 6.2% from 7.2%. This takes our 2012 global growth number to 3.0% vs consensus of 3.3%. Looking towards the end of 2012, we expect a modest improvement in global growth momentum. Our 2013 forecasts are above consensus.

Here is it in a tabular form via Business Insider: