Lockton Affinity is an affiliate of Lockton Companies, the largest privately held broker in the world. Since 1987 we have been meeting the dynamic, specialized needs of affinity groups, franchises, professional organizations, and associations of all sizes. Affinity-Overview.jpgToday, we\'re one of the nation\'s leading program administrators, with offices in the US and the UK, managing insurance needs for groups of all sizes. We have all the necessary skills to steer your group program toward even greater success today, tomorrow and for years to come.