“Byddai'n gwbl afresymol i Lywodraeth y DU ystyried anhrefn llwyr ymadael heb gytundeb, ac rydym yn pwyso arnoch i ymwrthod â'r posibilrwydd hwn mewn ffordd bendant a diamwys cyn gynted â phosib.
“It would be unconscionable for a UK government to contemplate a chaotic no deal exit and we urge you to reject this possibility clearly and unambiguously as soon as possible.