John Sullivan decided to write the screenplay for Micawber after his wife bought him a leather-bound set of Dickens novels. He read them in the same order as he had done years before when he was a schoolboy. When he got to David Copperfield Sullivan says it was blindingly "obvious" who should play the character. So he bought a copy and sent it to David Jason.
Micawber was Lucinda Dryzek's very first television appearance.