Royal Mail Christmas Posting Dates 2025. If you’re sending post with 2nd class and 2nd class signed for postage, the last recommended posting date is wednesday, december 18. Last posting date for 2nd class mail is wednesday december 18.

Our uk christmas last order date is 16th december 2025, and those parcels will be posted on 17th december with royal mail or parcelforce signed for and tracked express 48. Royal mail have released their recommended latest christmas posting dates for 2025.