The IPC chair, deputy chairs and commissioners are appointed for five years; however, this can be renewed, subject to satisfactory performance, up to a maximum of eight years.
Subject to paragraph 4(2) in Schedule 1 of the Planning Act 2008, these appointments can be terminated early by the Secretary of State giving three months notice, in writing. A commissioner may also resign, again giving three months notice, in writing.
The declarations of interest and political activities of commissioners of the Infrastructure Planning Commission (IPC) are publicly available on the IPC website at:
http://infrastructure.independent.gov.uk/?page_id=1538