This article, the first in a three-part series on Long Covid, provides a definition of post-Covid-19 syndrome and Long Covid. It highlights the considerations for diagnosis and an overview of the management of commonly reported symptoms through the experience of one of the 90 NHS England commissioned post Covid (Long Covid) assessment clinics, in addition to lived experiences of persons with Long Covid (PwLC). The next two articles in this series will look at the use of digital technology in Long Covid self-management and virtual group assessments.