Myself, Dr Michael Crilly and Dr Georgiana Varna are currently engaged in developing and deploying a series of practical, urban design, experiments in the North East of England. We are doing this because we believe we can learn a great deal about how urban spaces should evolve by 'doing' as well as by observing. This approach builds on our previous efforts (Oswell & Varna, 2024, Varna & Oswell, 2023; Varna & Oswell, 2021); but we would be very interested to hear the views of colleagues, not only on how we we are planning to carry out this work, but also how they use processes of experimental urbanism if they are engaged in it themselves.