NEW YORK—US public relations firms Revive, Jones Public Affairs and Borders & Gratehouse were the three fastest-growing in our global ranking for 2010, all doubling in size during the year. Revive, a healthcare specialist in its second year, actually saw fees more than triple, ending the year with income of $3.7 million.

Jones, a public affairs specialist based in Washington, DC, grew by 110 percent, saw its fees increase by 117 percent to slightly more than $2.5 million. San Francisco-based technology boutique Borders & Gratehouse enjoyed growth of 110 percent, ending the year with fees of close to $1.8 million.

Portuguese firm Lift Consulting (fees up 78 percent to more than $4.7 million) and CitySavvy—a financial specialist with offices in the UK and the Netherlands (up 70 percent to $3.3 million) rounded out the top five.

Among agencies with fee income of $10 million or above, the fastest-growing firm was Russia’s CROS (up 67 percent to around $20 million), followed by US-based technology specialist Atomic (up 46 percent to $11.1 million) and China’s Blue Focus Consulting (up 40 percent to around $45 million).

Among US firms, Revive, Jones and Borders & Gratehouse finished ahead of Linhart Public Relations of Denver (up 50 percent to $4.1 million) and Atomic.

Among Asian firms, Thailand’s 124 Communications Consulting was the fastest-growing (up 50 percent to $6.1 million), ahead of Rice Communications of Singapore (up 45 percent to slightly more than $1 million), Blue Focus, Adfactors of India (37 percent growth to $13.8 million), and Korea’s Prain (up 32 percent to over $17 million).

Among continental European firms, Lift and CROS finished ahead of Swedish public affairs specialist Diplomat Communications (up 45 percent to $5.8 million), Russia’s ProVisiion (38 percent growth to $5.1 million) and Germany’s Oliver Schrott (up 31 percent to $18.9 million).

Except for CitySavvy, the only UK firm to crack the top 20 fastest-growing was Threepipe, which grew 35 percent to slightly more than $2 million. Rounding out the UK top five were salt, Portland and Whiteoaks.