Guests who have a three year visa that is due to expire may apply for the Ukraine Permission Extension 28 days before their visa expiry date.
Gall gwesteion sydd â fisa tair blynedd sy'n dod i ben wneud cais i'r Cynllun Estyn Caniatâd Wcráin 28 diwrnod cyn y dyddiad y daw eu fisa i ben.