You will NOT need to tell future employers, but it might show on certain checks such as Enhanced Disclosure and Barring Service(DBS) check.
NI fydd angen i chi ddweud wrth gyflogwyr yn y dyfodol, ond gallai ddangos ar rai gwiriadau fel gwiriad y Gwasanaeth Datgelu a Gwahardd Manwl (DBS).