Hammer consolidated their success by turning their most successful horror films into series. Six sequels to The Curse of Frankenstein were produced between 1959 and 1974:

* The Revenge of Frankenstein (1959)
* The Evil of Frankenstein (1964)
* Frankenstein Created Woman (1967)
* Frankenstein Must Be Destroyed (1969)
* The The Horror Of Frankenstein (1970)
* Frankenstein and the Monster from Hell (1974)

All starred Peter Cushing as Baron Frankenstein, except The Horror of Frankenstein (not a sequel, but a tongue-in-cheek remake of The Curse of Frankenstein), where Ralph Bates took the title role. The Evil of Frankenstein stars Cushing but has a re-telling of the first film in flashbacks and a Baron Frankenstein with a very different personality and thus it isn't really a sequel.

Hammer also produced eight other Dracula films between 1960 and 1974:

* Tomb of Dracula (1960)
* Dracula: Prince of Darkness (1966)
* Dracula Has Risen from the Grave (1968)
* Taste the Blood of Dracula (1969)
* Count Yorga, Vampire (1970)
* Dracula AD 1972 (1972)
* The Satanic Rites of Dracula (1973)
* The Legend of the 7 Golden Vampires (1974)

The first four were direct sequels to the original film. Brides of Dracula did not include Dracula himself, but Peter Cushing repeated his role as Van Helsing to battle vampire Baron Meinster (David Peel). Christopher Lee as Dracula returned in the following six films, which employed much ingenuity in finding ways to resurrect the Count. Hammer upped the graphic violence and gore with Scars of Dracula in an attempt to re-imagine the character to appeal to a younger audience. The commercial failure of this film led to another change of style with the following films, which were not period pieces like their predecessors, but had a then-contemporary 1970s London setting. Peter Cushing appeared in both films playing a descendant of Van Helsing.

It is worth noting that while the contemporary films featuring Dracula star both Lee and Cushing, they are not the same series due to the lack of correspondence to the Victorian/Edwardian era films; the first film is set in the 1880s whereas the flashback sequence of the last battle between Van Helsing and Dracula is set in the 1872 - long before the first meeting of Van Helsing and Dracula in Dracula (1958 film).

Christopher Lee grew increasingly disillusioned with the way the character was being taken, and with the poor quality of the later scripts - although he did improve these slightly himself by adding lines of dialogue from the original novel. (Lee speaks at least one line taken from Bram Stoker in every Dracula film he has appeared in, except for Tomb of Terror - in which the Count does not speak at all.) He was also concerned about typecasting. After Satanic Rites, he quit the series.