In the church sketch, the unseen preacher is the voice of Rowan Atkinson. He is speaking nonsensical gibberish in his natural voice.
The Church routine is one of the most popular and was frequently performed live as part of Rowan Atkinson's stage show.
In the exam sequence, the face of Mr. Bean's alarm clock is only briefly visible, but it is, in fact, a Mickey Mouse clock.
Rudolph Walker, who plays the exam invigilator, later co-starred with Rowan Atkinson in the sitcom The Thin Blue Line (1995).
The license plate on Mr. Bean's orange Mini is RNT 996 H