Delivery Service Updates Last Christmas Posting Dates for 2019 To make sure your Christmas post arrives in plenty of time please note that the deadline for UK deliveries is Wednesday, December 18 2019. If your country is not listed – unfortunately, the last posting dates for delivery before Christmas have now passed When will Royal Mail not deliver post? There will be no delivery and collection service from Christmas Day through to Boxing Day, however normal service will resume on Friday, December 27. On New Year's Day there will be no deliveries or collections. In Scotland, January 2 is a bank holiday so there will be no deliveries or collections north of the border. We will continue to monitor the situation and update you as and when necessary.