<Tr> <Th> Original network </Th> <Td> BBC1 </Td> </Tr> <Tr> <Th> Original release </Th> <Td> 5 October 1975--4 December 1977 </Td> </Tr> <P> Poldark is the original version of the BBC television series adaptation of the novels of the same title written by Winston Graham . The adaptation was first transmitted in the UK between 1975 and 1977 . </P> <P> The romantic saga follows Ross Poldark (Robin Ellis) as he loses his fiancée, the well - bred beauty, Elizabeth (Jill Townsend), to his cousin Francis (Clive Francis). Ross ends up marrying his servant, the unlikely - looking Demelza (Angharad Rees), but his passion for Elizabeth simmers on for years . Set in late 18th century Cornwall, the plot follows Ross Poldark's attempts to make his derelict tin mines a success . Life is hard, smuggling is rife and Ross Poldark finds himself taking the side of the underclass against the ruthless behaviour of his enemies, the greedy Warleggan clan including George Warleggan (Ralph Bates). </P>

When was the first series of poldark made