Tiffany Lam

Tiffany Lam




T: +44(0)207 820 6327


Tiffany Lam is leading NEF Consulting’s work on the future of cities and urban mobility, exploring issues around gender-inclusive cities, the 15-minute city and a Green New Deal for cities. Tiffany is a global expert on gender and cycling and is currently working with the City of Bogota on a gender analysis of new cycling infrastructure, as well as with Sustrans to ensure inclusive design and delivery of Healthy Streets for London.

In addition to working on projects related to inclusive cycling and sustainable cities, Tiffany’s other projects at NEF Consulting are related to health inequalities. For instance, an evaluation of the Local Conversations programme, a place-based initiative to build collective control and improve the local social determinants of health, funded by the People’s Health Trust. She is also leading an evaluation of a Sport England Moving Together project to improve physical activity and health in an area of high deprivation in the London Borough of Hackney.

Tiffany holds an MSc in City Design & Social Science from the London School of Economics and a BA in Women’s Studies and Peace & Justice Studies from Tufts University. She is fluent in Spanish and has previously worked in Madrid. Prior to joining NEF Consulting, she worked on various independent consulting projects related to gender, cycling and sustainable cities and was named one of Cycling UK’s 100 Women in Cycling 2018. Before moving to London in 2015, she worked as a Civil Rights & Employment paralegal at a public interest law firm in Washington, DC.




  • Gender analysis of new cycling infrastructure in Bogota. A study of the Ciclo Alameda Medio Milenio, a large cycling infrastructure project in Bogota, and developing recommendations for city officials to help achieve gender equity in cycling. This work is funded by the GIZ and C40 Cities Finance Facility.
  • Healthy Streets Officers. Strategic Adviser to Sustrans to ensure that their design and delivery of Healthy Streets is inclusive of London’s diverse communities. Transport for London commissioned Sustrans to deliver a Healthy Streets Officers programme to make London streets healthier, safer for walking and cycling, and more liveable. 
  • Evaluation of the Local Conversations programme. A longitudinal evaluation of the impact of the Local Conversations programme, funded by People’s Health Trust, on the local social determinants of health and health inequalities.
  • Sport England evaluation of King’s Park Moving Together. An evaluation of a Sport England investment in two estates experiencing high levels of deprivation in the London Borough of Hackney, with the aim of increasing physical activity and improving health in the local area.
  • Impact of bus automation on workers.  Contributed to research on the impact of bus automation on bus drivers and workers in the bus industry.
  • Local economic development for Barking and Dagenham. Support for  the London Borough of Barking and Dagenham with an inclusive local economic development strategy.
  • The National Lottery-funded Help through Crisis programme. The learning, evaluation and support (LSE) team, including NEF Consulting, is a consortium of organisations commissioned by the National Lottery Community Fund to help build understanding and capture learning from the Help through Crisis programme.




  • Creating a Theory of Change – Tiffany leads our open training on Creating a Theory of Change and delivers in-house tailored training. She also facilitates Theory of Change workshops, examples include a workshop for Construction Declares to clarify next steps within the built environment sector in addressing the climate emergency.




Healthy streets and the right to the city

Volunteers alone cannot fill the gap

Training Programme
Strategic overviews and practical training.

We offer tailored online and on-site training and briefings on Theory of Change, measuring social impact, commissioning for outcomes and social value, SROI, measuring local economic impact, community economic development, and more.

We also facilitate workshops to help you develop a Theory of Change for your programme or strategy. 

Clients include local authorities, universities, public health services, charities, community groups, membership bodies, and responsible businesses.

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by @nefconsulting