Four series were made comprising 65 episodes which aired between 6 September 1988 and 16 February 1993.
An engaged couple spend the night in Castle Duckula, which bores The Count and frustrates Igor.
After 1992, Thames became an independent production company, making programmes commissioned from broadcasters.
David Jason was also busy filming the first series of A Touch of Frost in 1992, and was unavailable for some of that year.
According to Brian Trueman, thirteen more episodes were scripted and recorded, but were never animated due to Thames Television's loss of the ITV licence.