“Er y byddwn yn gwneud popeth o fewn ein gallu i sicrhau ein bod wedi paratoi gymaint â phosib ar gyfer sefyllfa o'r fath, nid oes amheuaeth y byddai'r canlyniadau'n drychinebus i bob rhan o'r DU.
“While we will continue to do everything we can to ensure we are as prepared as possible for this eventuality, there should be no doubt that the consequences would be catastrophic for all parts of the UK.