In 1962 he returned to London to attend one of the Lancaster House conferences. There, KANU and KADU representatives met with British officials to formulate a new constitution. KADU desired a federalist state organised on a system they called "Majimbo" with six largely autonomous regional authorities, a two-chamber legislature, and a central Federal Council of Ministers who would select a rotating chair to serve as head of government for a one-year term. Renison's administration and most white settlers favoured this system as it would prevent a strong central government implementing radical reform. KANU opposed "Majimbo", believing that it served entrenched interests and denied equal opportunities across Kenya; they also insisted on an elected head of government. At Kenyatta's prompting, KANU conceded to some of KADU's demands; he was aware that he could amend the constitution when in office. The new constitution divided Kenya into six regions, each with a regional assembly, but also featured a strong central government and both an upper and a lower house. It was agreed that a temporary coalition government would be established until independence, several KANU politicians being given ministerial posts. Kenyatta accepted a minor position, that of the Minister of State for Constitutional Affairs and Economic Planning.