Get In Touch

Wrasse climbing gourami amur pike Arctic char, steelhead sprat sea lamprey grunion. Walleye

523 Sylvan Ave, 5th Floor
Mountain View, CA 94041USA

Launching the next generation of startups tackling air pollution

Breathable Cities is the largest startup accelerator programme dedicated to helping early-stage technology focused startups raise investment. 

Between June and September 2023, our first cohort of 11 startups worked with industry, government and investors to validate their business models, refine their solutions and prepare to fundraise. They launched their innovations at the Breathable Cities Demo Day on 11 October 2023.

Our mission is to help build successful investable businesses that make a direct impact on the air that we breathe.

Play Video

Growth Studio run global accelerator programmes designed to help startups who save, protect and preserve our planet.

Our 2023 Accelerator Programme

The Breathable Cities accelerator programme celebrated its finale in October 2023. We graduated and launched 11 air quality startups into the investment ecosystem and local London testbeds.

As a mission to combat air pollution and its disastrous human health effects, this has been a first of its kind programme, imbued with passion, pace and personal pride. 14 weeks of intense workshops, and 80 hours of customised support.

We designed Breathable Cities to ignite change and meaningful impact. It’s about rapid and necessary innovation focused on cleaning up the air we breathe – both outdoors and indoors.

Watch this film for our programme in action!

Here’s how we help startups


Optimising high-impact businesses built on robust, scalable business models


Crafting compelling propositions that resonate with   investors, media & industry


Working with  investors, academics, business and government  to build validated solutions


Helping our cohort understand and navigate the fundraising process


Creating confident, articulate and persuasive founders &  pitch teams

Growth Studio run global accelerator programmes designed to help startups who save, protect and preserve our planet.

About Growth Studio

We partner with founders to jointly validate their solutions, gain market traction and raise investment for growth.

We believe that startups making the world a cleaner, healthier and more sustainable place to live, will be the billion dollar unicorns of tomorrow. 

We exist to help make this happen – and fast.

Play Video

Programme Dates

6th April
Application open
19th May
Applications close
12th June
Selection day
26th June
Programme starts
11th October
Demo day

Our 2023 Breathable Cities programme is now closed. Please click here to register your details for our next programme.


Shirley Rodrigues
Deputy Mayor for Environment & Energy

“All Londoners should be able to breathe clean air, which is why the Mayor is delivering an ambitious package of measures to tackle the capital’s air pollution. Local communities and businesses also have a vital role to play, and I am delighted to congratulate all the clean air startups on their efforts in tackling the effects of toxic air, alongside Growth Studio and Impact on Urban Health for creating this exciting programme.”

Have a question? Get in touch


Growth Studio, FORA Soho, 33 Broadwick Street, London, W1F 0DQ

Follow us:

+44 7970 252118


Interested in working with us?

Sign up to keep in touch.

If you have a question or would like to speak to the team, please drop us a note and we'll be in touch.
Please enable JavaScript in your browser to complete this form.