Fodd bynnag, er bod Gweinidogion Cymru wedi nodi'n glir eu hamodau ar gyfer cydweithio, nid yw Llywodraeth y DU wedi cyflwyno cynnig ffurfiol i Lywodraeth Cymru ar Borthladd Rhydd yng Nghymru.
However, despite Welsh Ministers clearly setting out the conditions where a joint approach could be taken, no formal offer has been presented by the UK Government to the Welsh Government on a proposed Freeport in Wales.