This divergence in policy resulted in the need for police, and partners, to review UK and Welsh Government plans to determine a way forward.
Arweiniodd y gwahaniaeth hwn mewn polisi at yr angen i'r heddlu, a phartneriaid, adolygu cynlluniau Llywodraeth y DU a Llywodraeth Cymru i benderfynu ar ffordd ymlaen.