Northern line extension – South London welcomes the long awaited arrival of two new underground stations

We are very pleased to see the opening of the London Underground Northern Line extension today, the first major addition to the Tube network this century. This brings much needed connectivity across the capital, carrying passengers to new stops at Nine Elms and Battersea Power Station. Battersea is now only a 15-minute direct ride from the City and West End.

Volterra were responsible for providing the economic and business case for the extension. The development will support the c. 25,000 new jobs and 20,000 new homes that are expected to be generated in the Vauxhall, Nine Elms, Battersea (VNEB) regeneration area. Volterra have supported some notable projects in this area during their respective planning phases, including the redevelopment of Battersea Power Station, the delivery of a new hotel complex in Nine Elms near the US Embassy, a student housing development, and various residential developments across different parts of Nine Elms. The extension will therefore play a big part in the post-COVID recovery for the capital, and drive economic growth in the area for many years to come.

Congratulations to all involved!

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Alex O’Byrne, Associate at Volterra, is an experienced economic consultant specialising in economic, health and social impact, economic strategy, project appraisal and socio-economic planning matters.

Alex has led the socio-economic and health assessments of some of the most high profile developments across the UK, including Battersea Power Station, Olympia London, London Resort, MSG Sphere and Westfield. He has significant experience inputting to EIAs and s106 discussions as well as drafting economic statements, employment and skills strategies and affordable workspace strategies.

Alex is also experienced at economic appraisal for infrastructure. He was project manager of the economic appraisal for the City Centre to Mangere Light Rail in Auckland. He also led the economic and financial appraisals of the third tranche of the Transport Access Program for Transport for New South Wales, in which Alex developed and employed innovative methodological approaches to better capture benefits for individuals with reduced mobility.

He is interested in the limitations of current appraisal methodologies and ways of improving economic and health analysis to ensure it is accessible to as many people as possible. To this end, Alex recognises the importance of transparent and simple to understand analysis and ensuring all work is supported by a robust narrative.

Alex holds a BSc (Hons) in Economics from the University of Manchester and he was a member of the first cohort of the Mayor’s Infrastructure Young Professionals Panel.


Senior Partner

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Ellie is a partner at Volterra, specialising in the economic impact of developments and proposals, and manages many of the company’s projects on economic impact, regeneration, transport and development.

With thirteen years experience at Volterra delivering high quality projects to clients across the public and private sector, Ellie has expertise in developing methods of estimating economic impact where complex issues exist with regards to deadweight, displacement and additionality.

Ellie has significant experience in estimating the economic impact across all types of property development including residential, leisure, office and mixed use schemes.

Project management of recent high profile schemes include the luxury hotel London Peninsula, Battersea Power Station and the Nova scheme at London Victoria. Ellie has also led studies across the country estimating the economic and regeneration impact of proposed transport investments, including studies on HS2 and Crossrail.

Ellie holds a degree in Mathematics and Economics from the University of Cambridge.