Mae cyfyngiadau symud Lefel Rhybudd 4, a ddaeth i rym ar 18 Rhagfyr 2020, yn parhau i fod ar waith sy'n golygu bod yn rhaid i bawb aros gartref oni bai eu bod yn teithio am resymau cyfyngedig iawn, gan gynnwys ar gyfer gwaith.
Alert Level 4 lockdown restrictions, which came into force on 18 December 2020, remain in place meaning everyone must stay at home unless travelling for a very limited set of reasons, including for work.