Pegasus is a British period television drama series which aired in four parts on BBC 1 in 1969. It is a sequel of the 1968 series Triton which focused on two British naval officers battling a Napoleonic plot to invade Britain with the aid of submarines. In the sequel the two officers return to try and foil a ploy to use hot air balloons to bombard the naval base at Portsmouth at the time of Trafalgar. Principal cast Jonathan Adams as Captain Julius Belwether Paul Grist as Lieutenant Simon Lamb Robert Cawdron as Robert Fulton John Abineri as Louis Rene Lavassoir Latouche Kynaston Reeves as Lord Barham Tony Caunter as Sir William Congreve Terry Scully as Lord Nelson References Bibliography Ellen Baskin. Serials on British Television, 1950-1994. Scolar Press, 1996. Sue Parrill. Nelson's Navy in Fiction and Film: Depictions of British Sea Power in the Napoleonic Era. McFarland, 2009. External links BBC television dramas 1969 British television series debuts 1969 British television series endings English-language television shows