The OED cites the first printed usage (of the variant spelling Crimbo) as being in 1928. They give John Lennon's 1963 usage in a Beatles' Fan Club Christmas single as the first recorded use of the variant form Crimble.
Chrimbo (plural Chrimbos)
- (Britain, slang) Christmas, especially with regard to its more secular and commercial aspects.
2001, Kevin Sampson, Outlaws:
- The thing is, The Montrose is cracker on a Thursday night, never mind that the Chrimbo lunacy season has kicked off good and proper.
2004, Amanda Boulter, Back Around the Houses:
- "A Chrimbo pressie for me?" He peeped around the door.