[1] The institute is a charity registered in England, Wales and Scotland, with its head office in Birmingham, UK, and members globally.

Membership of The Institute of Leadership is open to leaders and managers of all levels, including those with no practical experience.

The Institute of Leadership offers a wide range of learning resources to support the continuous professional development of leaders and managers in a variety of organisations and settings.

[3] The National Examinations Board in Supervisory Studies (NEBSS), subsequently the National Examining Board for Supervision and Management (NEBS), was established in June 1964, on the initiative of the Department of Education and Science, as an independent autonomous body administered by the City and Guilds of London Institute.

[4] Following the merger, the Institute of Leadership & Management continued to be part of the City & Guilds Group until 2016, when the Institute of Leadership split off to become a separate organisation, with the accreditation body continuing as part of the City & Guilds Group, taking the name of ILM.