Thames Valley devolution expression of interest submitted to government

An expression of interest letter to create a mayoral strategic authority (MSA) within the Thames Valley has been submitted to government.

This follows discussions and agreement by 13 councils within the region.

The expression of interest sets out a shared ambition for an MSA – a new combined authority led by a directly elected mayor and made up of a number of councils – to secure new powers and funding for the area. This would enable local councils to plan and deliver more integrated and effective transport, infrastructure, the right type of housing – with an emphasis on social housing – creating the conditions for faster, more inclusive growth across the region.

The MSA will make decisions that positively impact communities and businesses across the wider region, with local councils continuing to deliver critical and wider public services for the benefit of all residents.

Councils across the region debated the expression of interest in their meetings during November and December. The letter submitted to government was signed on behalf of these authorities by Councillor Mary Temperton, Leader of Bracknell Forest Council and Chair of the Berkshire Prosperity Board, and Councillor Liz Leffman, Leader of Oxfordshire County Council.

Councillor Mary Temperton, Leader of Bracknell Forest Council and Chair of Berkshire Prosperity Board, said: “Signing the expression of interest is an important step forward in our local devolution journey and together we hope that this will provide a compelling case to government for sustained investment in the region. I am looking forward to continuing the productive discussions that have been taking place and developing our plans with government.

“Our aim with the MSA is that it will help boost the local economy and improve services that are really important to our residents, like transport and housing as well as boost jobs. It will also be an opportunity for our area to take charge of big infrastructure projects which make a real difference to lives locally.”

Councillor Liz Leffman, Leader of Oxfordshire County Council, said: “We have a once in a generation chance to seize the opportunities that devolution offers. By coming together as a strategic authority, our councils can better coordinate resources and expertise to deliver the support our residents need. Our collaboration will support innovative businesses, expanding access to skills training, affordable homes, and a modern, joined-up transport network – ensuring everyone benefits from new opportunities and an improved quality of life.

“A Thames Valley MSA will harness the collective strengths of the region to unlock unparalleled prospects for inclusive and sustainable growth. It provides a unique opportunity to shape our urban and rural places ensuring lasting benefits for current and future generations.

“I look forward to continuing further discussions with councils and government on realising our vision.”

The Thames Valley MSA will be designed to speed up delivery, attract investment and strengthen one of the UK’s most productive and innovative regional economies. The ambition is for a strategic growth partner for neighbouring authorities where joint working will be beneficial, for example councils linked to the Oxford - Cambridge corridor.

Council discussions will now continue, including with government, with detailed proposals being developed in the coming months for consideration by local councils and partners.

The 13 councils currently in discussion are:

  • Bracknell Forest Council
  • Cherwell District Council
  • Oxford City Council
  • Oxfordshire County Council
  • Reading Borough Council
  • Royal Borough of Windsor and Maidenhead
  • Slough Borough Council
  • South Oxfordshire District Council
  • Swindon Borough Council
  • Vale of White Horse District Council
  • West Berkshire Council
  • West Oxfordshire District Council
  • Wokingham Borough Council.

Published: 19 December 2025