Government has launched consultation on the options for Local Government Reorganisation. For East Sussex there are two options. One for East Sussex to become a unitary authority, and the other to split all of Sussex into five unitary authorities. Please see the link to the consultation below:

https://www.gov.uk/government/consultations/local-government-reorganisation-in-east-sussex-and-brighton-and-hove-and-west-sussex