Brian Willis chairs international juries at major events throughout the world. He was Chairman for the Jury of Sydney Olympics. He was Chairman of the jury and Chief Umpire at the America's Cup in 2000, again in 2003 and has been appointed to the same roles in 2007.
He is currently a member of the International sailing federation (ISAF) Racing Rules Committee, on which he has served for over 20 years. He was Chairman of the ISAF Race Management. Committee and the ISAF Race Officials Committee, and was instrumental in the development of umpiring.