The Bell Pottinger Group again occupies the number one spot, with growth of 11 per cent from £37.4m in 2004 to £41.6m in 2005.
The Top 150 this year includes 23 companies making their first appearance since 2002, having been unable to divulge their income figures owing to the Sarbanes Oxley Act. A panel of experts has helped devise a formula to estimate the 2005 fee incomes of each of these agencies.
It now means Weber Shandwick displaces Citigate Dewe Rogerson as the second largest agency, while Hill & Knowlton reappears at number four.
Financial Dynamics, which did not enter last year is third, with fee income of £27.3m, up 34 per cent on 2004.