Local government reorganisation: implementation letter to Essex, Southend-on-Sea and Thurrock council chief executives 31.3.2026 | Her Majesty's Revenue and Customs Letter to Essex, Southend-on-Sea and Thurrock council chief executives with information about the implementation of the local government reorganisation decision​. On 26 March 2026, Ministry of Housing, Communities and Local Government officials wrote to the chief executives of Essex, Southend-on-Sea and Thurrock councils to provide information around the secondary legislation that will be taken forward to implement a proposal for 5 unitary councils in Essex, Southend-on-Sea and Thurrock.​ https://www.gov.uk/government/publications/local-government-reorganisation-implementation-letter-to-essex-southend-on-sea-and-thurrock-council-chief-executives