The South Essex Councils (SEC) Joint Committee brings together representatives from Basildon, Brentwood, Castle Point, Rochford, Southend-on-Sea, Thurrock, and Essex County Council. Its purpose is to improve prosperity and wellbeing across the South Essex region by addressing issues that individual councils cannot solve alone, creating a greater collective impact, and providing leadership to promote the area. The committee's membership typically consists of the Leader of each constituent council.