Final appearance of James Hayter as Mr Tebbs. The actor was due to return the following season however was convinced to withdraw from the role by an offer from Mr Kipling's Cakes to triple his salary and continue with voice-overs of their television ads. They felt that the character of Tebbs hurt Hayter's image and in turn their brand, and did not want him to continue in the role.
This episode "Happy Returns" was skipped in the BBC 2 Afternoon Classics 2015 repeat. Due to the large volume of Musical numbers in the end scene, its most likely due to obtaining Music Clearances and Rights permissions clearances from the relevant Music Publishers and Rights holders, within the BBC Budget. Other episodes have also been skipped due to music, and other non-pc elements in the same run.