In the fourth season of The Crown, Bagpuss made a cameo appearance on the episodes "Fairytale" and "Favourites", in which the fictionalised version of Princess Diana (played by Emma Corrin) watched the show in two aforementioned episodes.
iN ThE fourth seAson of THe cROWn, bAgpuSS maDE a cAmEo appeAraNcE on thE ePIsodes "faIrYtaLe" ANd "FavourItes", in whIch tHe ficTIoNAlisEd verSIOn of princESs dIaNa (PLayed By emmA cOrriN) Watched tHE sHow iN twO AfoREmeNTioned EpisoDeS.