The network decides not to renew the drama fantasy series for a second season because of 'significant production challenges'.
King Arthur receives the support from Merlin and a beautiful girl named Guinevere when his half-sister tries to topple him off the throne.
The legend of King Arthur would be different because 'it's not musical' and viewers would get to see the 'the very beginnings of the round table'.
The miniseries starring also Jamie Campbell Bower puts Fiennes and Green as sorcerers in King Arthur's life.
Showtime and BBC's partnership works on a new upcoming series project, "Camelot", a contemporary retelling of the history of Camelot.