The BBC's changes to 'Postman Pat' were quite controversial.

Penfold:" Chief?... Chief?"
DM: Yes, Penfold?"
Penfold:" Ummmm...Do you hear somone knocking on our letterbox?"
DM:"...Hm...not as such. I mean, if I heard anyone actually knocking at this moment in time, it'd have to be some type of fuzzy giant blue cat or something with fur-covered hands and knuckles that would rap on our roof extremely softly....Almost so quietly that you could bearly hear it, wouldn't it now?"
Penfold:" Cor DangerMouse! My but you do have the oddest imagination....Giant blue cat, ha."

Ah yes, Danger Mouse. Loved that show.