Hi @nickbouere, there are many people who, like you, were unable to access a test at the time when they would have tested positive. Helen's reply above references the NICE guidelines and also a leaflet we joint produced to help patients evidence how GPs should be supporting.
The Royal College of GPs also states:
"You do not need a positive SARS-CoV-2 test, or have been admitted to hospital to be diagnosed with post COVID-19 syndrome. Anyone with an acute infection of COVID-19, however mild, can go on to develop post COVID-19 syndrome"
Taken from this document: Management of the long term effects of COVID-19. The RCGP response and top tips for caring for our patients