The series went under various changes throughout its lifetime. Wizbit and Wooly's designs and voices were changed for the second season in 1986, and again for the third season in 1987.
A CGI reboot of the show was in development between 2007 and 2010, but was never released.
Although the first season was completed in 1985, the series didn't make its official premiere until January 1986.
While Paul Daniels was on the BBC staff along with some crew members including series 1 producer Clive Doig were involved the series was made by a independent production company NOT THE BBC which meant that the series was actually bought by the BBC.