Some Mothers Do 'Ave 'Em his daughter, also named Jessica; references to Frank's mother suggest that she was very like her son. The final series was written by Allen based on stories by Michael Crawford (not written by Crawford himself as sometimes reported) and made five years after the previous one (although there had been two Christmas specials in between). Frank's character changes noticeably in this series, becoming more self-aware and keen to make himself appear more educated and well-spoken. He develops an air of pomposity which is always best demonstrated when someone would approach and enquire "Mr Spencer?" to which he would always reply,
Some Mothers Do 'Ave 'Em "I am he." He also becomes more self-assured, and much more willing to argue back when criticised, and often wins arguments by leaving his opponents dumbfounded by the bizarreness of what he would say. Acknowledging the show's success in Australia, the final series saw him begin talk of having relations there, and contemplating emigrating. Crawford himself has talked of how he based many of Frank's reactions on those of a young child. Crawford also found it difficult to break out of the public association with the role, despite his later career as a hugely successful musical performer on the West