Grant Thornton International, the international accounting and consultancy organisation, has rebranded. Between now and the end of 2008 the new logo and brand will be phased in by member firms in over 80 countries. David McDonnell, chief executive officer, said: " We have created this new brand to support our global business strategy of demonstrating real leadership within our profession and becoming a more cohesive global organisation." The brand was created by Pentagram Design, an agency based in London, San Francisco, New York, Austin and Berlin.