| The Rt. Hon. Sir Joseph Porter K.C.B (First Lord of the Admiralty) | Bryan Baber |
| Captain Corcoran (Commanding H.M.S. Pinafore) | David Anderson |
| Ralph Rackstraw (Able Seaman) | Andrew Burnish |
| Dick Deadeye (Able Seaman) | Bill Snelling |
| Bill Bobstay (Boatswain's Mate) | John Warner |
| Bob Becket (Carpenter's Mate) | Stuart Hales |
| Tom Tucker (Midshipmite) | Jonathan Davies |
| Josephine (The Captain's Daughter) | Kym Wilcocks |
| Hebe (Sir. Joseph's First Cousin) | Jane Robotham |
| Little Buttercup (A Portsmouth Bumboat Woman) | Sarah Jerling |
First Lord's Sisters, Cousins and Aunts
Denise Baugh, Jeanne Boniface, Pauline Davies, Jeannette Franklin, Cathy Hales, Bridget Hand, Mary Marsh, Brenda May, Pam Rogers, Jill Woods
Sailors
Dennis Allcock, John Batten, Paul Baugh, George Franklin, Derek Holmes, Paul Jerome, Bernard Rogers, John Smythe, John Turner