The codes for the grinch who stole your christmases with hope that you did find tidings of great joy at some point.

December 22nd

BA213 BOS TECY
BA189 EWR FCRY
BA006 HND-LHR Diverted due to a passenger, I shall not elaborate further.
BA 142 DEL-LHR technical divert back to DEL…finally got away on the 23rd UTC time.
BA 285 LHR-SFO late engine compressor wash due to tardy contractors and this late release back to the line, thus the BA284 of the same date was late leaving SFO back to LHR.
BA007 Late due to an aircraft change for a late notice boroscope inspection requirement.

December 23rd

BA67 PHL TECY
BA197 IAH TECY
BA229 BWI TECY
BA213 BOS TECY
BA188 EWR-LHR CCRN completely appropriate code and correctly used, no further information will be passed regarding this.
BA 285 LHR-SFO late engine compressor wash due to tardy contractors and this late release back to the line, thus the BA284 of the same date was late leaving SFO back to LHR.

December 24th

BA2552 GVA CCRY - crew sickness
BA2703/2703 LGW-TFS-LGW CCRY - crew sickness

December 26th
BA306 CDG FCRY
BA736 GVA OPEY - finnair went tech and not enough flight crew to bring up a spare op.
BA1416 BHD FCRY
BA1310 ABZ FCRY

I think that is all bases covered for both threads. If flarmip or corporate-wage-slave see any gaps please let me know.