But Royal Mail has issued an urgent alert to Britons in seven postcodes, who may experience severe delays as a result of local issues and weather warnings in parts of the country. It comes just a day before the postal service begins preparations to cease deliveries for 24 hours on January 1 to acknowledge the New Year's Day Bank Holiday. READ MORE: UK households most likely to receive DWP special £150 payment from December until March 2025 Get breaking news on BirminghamLive WhatsApp, click the link to join A fresh update from Royal Mail revealed that its air, road and rail network services operated to schedule over the last 24 hours, however there were some delays in the Bristol mail centre. Royal Mail said letters and parcels posted in four Bristol postcode areas yesterday, due for delivery today in other parts of the UK, "may be delivered later than planned".