https://gov.wales/the-welsh-governments-response-to-the-migration-advisory-committees-call-for-evidence-shortage-occupation-list
https://llyw.cymru/ymateb-llywodraeth-cymru-i-alwad-y-pwyllgor-cynghori-ar-ymfudo-am-dystiolaeth-rhestr-o-alwedigaethau-lle-ceir-prinder