Towards the end of the episode, Sister Monica Joan hands Ade Babayaro a small Bible. In the beginning of the scene, she places the Bible in his left hand. The view then changes to a close up of this right hand, in which she is placing the bible. The scene then changes again to a wide shot, with the Bible still in Ade Babayaro's right hand.
This episode, set in 1963, has a cash register showing £1.51. Decimalisation in the UK didn't happen until 1971.