There are exceptions to this for NHS clinical healthcare services (as defined), and procurements that are subject to the national security and general exceptions.
Ceir eithriadau i hyn ar gyfer gwasanaethau gofal iechyd clinigol y GIG (fel y'u diffiniwyd), a chaffaeliadau sy'n ddarostyngedig i'r eithriadau oherwydd diogelwch gwladol a'r eithriadau cyffredinol.