Ahead of Wednesday's awards announcement at the international advertising festival, British agencies OMD and Maxus are leading the pack with two nominations each, according to Campaign Magazine.

The dark undercurrent of social problems in Poland and Ukraine, hosts of UEFA's Euro 2012 football tournament, is making advertisers and sponsors anxious.

Research has shown that consumers are well-aware of giants McDonald's and Coca-Cola as chief sponsors of the London 2012 Olympics.

Here are the top ten MVBs (most valuable brands) in the world, according to Millward Brown’s annual BrandZ report: