The Trilateral Commission is a private organization, established to foster closer cooperation among the United States, Europe and Japan. It was founded in July 1973 at the initiative of David Rockefeller, who was Chairman of the Council on Foreign Relations at that time. The Trilateral Commission is widely seen as a counterpart to the Council on Foreign Relations.
The process of implementing global governance policy is believed to be as follows. Decisions are made by Bilderberg group and passed to trilateral commission for implementation in the three major regions. These policies are then implemented in the regions by CFR, RIAA, EU and other agencies who instruct governments to adopt these policies.
http://en.wikipedia.org/wiki/Trilateral_Commission includes a list of directors, corporate members, presidents and notable members past and present.
In the US administration most prominent politicians (secretaries of State etc) are members of CFR, Trilateral commission and Bilderberg, which at the very least does raise questions about their priorities, one would suspect a similar situation exists in the UK.