Background From 1974, the entire county of Essex was administered by
Essex County Council in a two-tier system with lower tier
district councils. This system continues in most of the county today, but in 1998 the districts of
Thurrock and
Southend-on-Sea were granted
unitary authority status, making them administratively independent from the county council.
Essex Police and the
Essex County Fire and Rescue Service continued to cover the entire county after 1998. In 2012, the elected county-wide position of
Essex Police and Crime Commissioner was introduced, with the role also becoming the fire authority and being re-named Police, Fire and Crime Commissioner in 2018. The three upper-tier authorities of Essex have also continued to work together on different issues since 1998. In 2009, it introduced
combined authorities which can be formed by volunteering groups of local authorities in England, to which the government can devolve powers. In 2023, the similar combined county authority was also introduced. Both authorities can be led by directly elected mayors supported by council appointees, or can be led by a body indirectly appointed by their member authorities.
Early proposals After the
2014 Scottish independence referendum, the
coalition government of
David Cameron pledged to devolve powers to city regions in England by negotiating devolution deals with local councils to form combined authorities. In September 2014, Essex County Council leader David Finch called on the government to explore establishing combined authorities for counties like Essex, with the devolution of tax raising powers, funding for social services and other policy areas. Negotiations for an Essex devolution deal, or a Greater Essex devolution deal as it also became known, began in December 2014, with Essex County Council,
Thurrock Council and
Southend-on-Sea Borough Council discussing the formation of a Greater Essex Combined Authority (GECA) with the government. Finch envisioned the combined authority being led by a
county governor, who would have a role similar to the elected
metro mayors of devolved city regions such as
Greater London and
Greater Manchester, though he was also willing to accept other arrangements if preferred by the government. All fifteen upper tier and lower tier councils in Essex registered their interest in the Greater Essex Combined Authority, though
Colchester Borough Council, Thurrock Council and Southend-on-Sea Borough Council were reluctant to fully commit to the proposal because of financial concerns. In January 2015, Thurrock Council and Southend-on-Sea Borough Council put forward a proposal of their own to create a South Essex Combined Authority or Essex Thameside Combined Authority, which would run along the northern bank of the
River Thames and include Thurrock and Southend and the district councils of
Basildon,
Rochford and
Castle Point in the county council area, which would form a land bridge between the two unitary councils. Thurrock Council leader John Kent and Southend-on-Sea Borough Council leader Ron Woodley claimed that their proposal was supported by local businesses, while the district councils considered separating from the rest of Essex because of Essex County Council's policy of turning off the majority of street lights at night, which they opposed. Work on both proposals continued into 2016. In March of that year, Kent and Woodley announced that their councils were withdrawing their support for the Greater Essex Combined Authority, again stating their belief that South Essex was a distinct economic zone from the rest of the county, while also voicing new concerns that the Greater Essex deal would give their areas a lack of autonomy, which they warned would stifle economic growth. The leaders also said they had been unable to secure benefits for the south of Essex in their discussions with the county council. In response, Finch said the county council could explore an Essex devolution deal without Thurrock and Southend. In Southend, the new Conservative leader John Lamb expressed his support for negotiating a county-wide devolution deal with the government. However, Thurrock Council's new leader Rob Gledhill continued his predecessor's policy of opposing a "pan-Essex" devolution deal, as he believed a South Essex deal could be more beneficial for the region. In June 2016, the fifteen councils leaders of Essex met to vote on a devolution settlement offered by the government, which would include a county-wide mayoral devolution deal for Essex. The deal was narrowly voted down by eight to seven votes, after Gledhill voted against the offer because he believed that this was in the best interests of southern Essex. After the collapse of the negotiations, Essex County Council and the southern district councils of Castle Point, Rochford, Basildon and also
Brentwood, which was not part of the proposed South Essex Combined Authority, agreed to form the
Association of South Essex Local Authorities (ASELA) with Southend and Thurrock. However, the councils agreed not to pursue any devolution deals so they could instead focus on cooperating in the existing framework of local government to encourage economic growth. Callaghan said there was an "appetite" for a combined authority from southern council leaders and argued that more powers were needed for the region to address economic inequality and improve social mobility. ASELA commissioned a South Essex governance review by the independent consultant Shared Intelligence, which reported its findings in June 2020. The report recommended the creation of a South Essex Combined Authority with a directly elected mayor who would serve for a term of four years, as it would be the "most appropriate governance arrangement" for ASELA to achieve its agreed economic goals, with an elected mayoral authority improving economic and strategic policy planning, giving the area a local identity and stabilising and improving its local governance. He said the prospectus had outlined an aim for the proposed combined authority to "contribute an additional £15 billion to the UK economy and create 100,000 new jobs by 2050", with Thurrock Council working with the councils of Basildon, Brentwood, Castle Point, Rochford and Southend to prove to the government in negotiations that "South Essex works and that it works for the whole nation".
Formation The devolution deal was agreed in October 2025. An interim chief executive was appointed in December 2025. Also in December, the
first election of the mayor was delayed until 2028 and after the
reorganisation of the constituent authorities is proposed to have been completed. ==Membership==