Ioan Gruffudd as Horatio Hornblower

Robert Lindsay as Sir Edward Pellew

Denis Lawson as Captain 'Dreadnought' Foster

Ian McNeice as Tapling

Andrew Tiernan as Bunting

Jonathan Coy as Lieutenant Bracegirdle

Ian McElhinney as Captain Hammond

Paul Copley as Mathews

Chris Barnes as Finch

Sean Gilder as Styles

Simon Sherlock as Oldroyd

Colin MacLachlan as Master Bowles

Frank Boyce as Midshipman Cleveland

Jonathan Aris as Clerkly Officer

Rupert Holliday-Evans as Steward

Peter Corey as HM Consul Duras

Simon Slater as Commander Morris

Frank Rozelaar-Green as Spanish Captain