If you have been contacted by NHS Wales Test, Trace, Protect service (TTP) and been told to self-isolate, you may be entitled to Financial Support.
https://appsportal2.npt.gov.uk/ords/live6/f?p=118071:5
https://gov.wales/self-isolation-support-scheme
https://llyw.cymru/cynllun-cymorth-hunanynysu