Full Breakdown
Thames Valley Devolution Advances Toward New Mayoral Strategic Authority
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In this breakdown
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Core Development: Government Announces Thames Valley Mayoral Strategic Authority
In the Autumn Budget, Chancellor John Healey announced that the Thames Valley region – covering Berkshire, Oxfordshire and Swindon – has been placed on the programme for a new Mayoral Strategic Authority (MSA). The proposal includes a £9.1 million allocation from the Good Growth Fund to support the authority’s development and fund priority projects in transport, skills, employment support, inward investment and affordable housing. The MSA would be led by an elected mayor and a board of representatives from each upper-tier authority, while existing councils would retain responsibility for everyday services.
The plan outlines a staged timeline: councils will develop a detailed proposal ahead of a stakeholder consultation in the new year; a formal proposal is expected in spring 2027; a shadow authority could be created later in 2027; and the first mayoral election is anticipated in 2028. From April 2027, mayoral strategic authorities are set to receive a 20 percent share of business rates, with a share of income tax to follow from 2028.
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Background & Context
The Thames Valley deal is part of a broader programme to finalise ten new devolution agreements across England. Similar combined authorities already exist in Greater Manchester and London, giving a single elected figure a strategic voice on regional issues. Local councils have spent the past two years drafting the Thames Valley proposal, which was submitted on the government’s deadline. Initial opposition from the Liberal Democrat leadership of Oxfordshire County Council and the Royal Borough of Windsor and Maidenhead centred on Swindon’s inclusion and the demand for an elected mayor; both concerns were withdrawn before the deadline.
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Data & Statistics
- £9.1 million earmarked from the Good Growth Fund.
- 13 councils will participate.
- 20 percent of business rates to be transferred from April 2027; a share of income tax from 2028.
- The national programme includes 10 new devolution deals.
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Official Statements & Responses
Swindon leader Gary Sumner called the announcement “a landmark moment” for the Thames Valley, while Labour’s Jim Robbins expressed delight.
Wokingham leader Stephen Conway argued that a mayoral authority would give the area “a stronger voice” and unlock funding unavailable to individual councils.
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Criticism & Opposition
Tim Bearder remarked, “With no offence to my friends in Wiltshire, you are not in the Thames Valley,” reflecting lingering doubts about Swindon’s inclusion. Some officials questioned whether the benefits would outweigh the costs and noted the challenge of aligning councils with differing political control.
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Timeline
- Autumn Budget – Thames Valley placed on programme and £9.1 million allocated.
- Proposal submission deadline – Councils submit joint proposals.
- Stakeholder consultation – Planned for the new year.
- December – Councils expected to approve the consultation proposal.
- Spring 2027 – Formal proposal to be submitted.
- Later 2027 – Possible establishment of a shadow MSA.
- April 2027 – MSA to receive 20 percent of business rates.
- 2028 – First mayoral election.
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What’s Next
The 13 participating councils will now draft a detailed proposal, followed by a public consultation early next year. After the consultation, they aim to approve the plan by December and submit a formal proposal in spring 2027. If approved, a shadow authority could be created later that year, paving the way for the inaugural mayoral election in 2028.