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Economic and Business Case Expertise for Transport, Buildings and Infrastructure

We provide advice and analysis to support planning, funding and delivery of projects ranging from major strategic developments to local community schemes.

Delivering Social Value

We support projects that will help transform and modernise the economy, support the transition to net zero and bring real benefits to communities.

Business Cases

We produce comprehensive and compelling business cases based on the “Five Case” structure, in line with HMT Green Book, TAG, WelTAG, DLUHC and other relevant guidance.

Economic and Social Impacts

We bring a holistic understanding of economic and social impacts. This includes quantitative analysis of direct benefits and appraisal of wider impacts.

Funding and Due Diligence

We identify potential funding sources and evaluate options for planning and delivery of projects. We also lead technical due diligence reviews to support investors and lenders.

To learn more about the services we offer, click here – or get in touch.

We work with clients across a range of sectors including housing, regeneration, rail and highways.


“Tim Ashwin supported Bristol City Council’s submission to the DLUHC Levelling Up Fund, producing an exemplary economic case and a compelling justification for funding.”

Kate Bedney, Development Support Officer, Bristol City Council

“Applying his commercial and economic expertise, Tim played a key role in delivering comprehensive technical and contractual due diligence to support the major highway project, ‘Verfügbarkeitsmodell A1 Münster bis Osnabrück.’”

Jörg Obergfell, Director, Arup Deutschland GmbH

“Tim has been an invaluable member of our business case team in recent months, consistently delivering work to a high standard.”

Pieter Meulendijk-de Mol, Co-Founder and Director, The Hub Transport Advisory


We’re proud to be part of the LDN Collective, a network of built environment experts and creatives fighting to improve people’s lives and the planet’s prospects.

We are also an approved supplier on Procurement for Housing’s SHED 2 Innovation Framework. For more info, visit our Benefit Cost Calculation Tool website.

Tim Ashwin – Director & Founder

Tim is an economic consultant with over 16 years of experience supporting regeneration, transport and infrastructure projects.

He set up Tim Ashwin Consulting Limited in mid-2022, motivated by a desire to deliver consultancy services in a more flexible and innovative way. Tim previously worked for over 12 years at Arup.

Tim has produced business cases for numerous projects including city centre and high street regeneration schemes, station upgrades, transport links and business parks. He has extensive knowledge of analytical and quantification methodologies used for financial and economic benefit appraisals and impact evaluations.

Tim’s wide-ranging experience also includes transaction advice, regulatory analysis and due diligence reviews. Tim understands the critical drivers for successful procurement, delivery and operation of infrastructure projects.

Tim is a fluent German speaker.

Sunny Slater – Economic Consultant

Sunny is an Economic Consultant who recently graduated with a Bachelor of Economics from Cardiff University.

Sunny brings a discerning and objective approach to his work, consistently incorporating diverse perspectives and sources into his analyses.

Since joining Tim Ashwin Consulting, Sunny has carried out in-depth socio-economic research and analysis, Excel modelling and preparation of briefing papers, presentations and reports. Sunny played a pivotal role in the preparing analytical content and stakeholder analysis to support our recent delivery of a social value plan, delivered on behalf of a bidder for a major urban housing development project.

Our full CVs are available on request. Please feel free to get in touch.