IMG Speakers: Sports and celebrity speakers for business, diversity, current events and motivational requirements. NY. and London, UK.International Speakers Bureau: Provides keynote speakers, authors, athletes, business leaders, trainers and celebrity entertainment. TX., Canada, Jordan and the Czech Republic.The Knowledge Brokers: Assists clients in more than ten countries, to find coaches, trainers, consultants and speakers who meet their requirements.The Leigh Bureau: Represents speakers in technology, business, internet, economics and the future. NJ. and Ireland.