Dick Van Dyke Caractacus Potts Sally Ann Howes Truly Scrumptious Lionel Jeffries Grandpa Potts Gert Fröbe Baron Bomburst Anna Quayle Baroness Bomburst Benny Hill Toymaker James Robertson Justice Lord Scrumptious Robert Helpmann Child Catcher Barbara Windsor Blonde Davy Kaye Admiral Alexander Doré First Spy Bernard Spear Second Spy Stanley Unwin Chancellor Peter Arne Captain of Guard Heather Ripley Jemima Potts Adrian Hall Jeremy Potts Desmond Llewelyn George Coggins Victor Maddern Junkman Arthur Mullard Cyril, Big Man Gerald Campion Minister Dick Van Dyke Caractacus Potts Sally Ann Howes Truly Scrumptious Lionel Jeffries Grandpa Potts Gert Fröbe Baron Bomburst Anna Quayle Baroness Bomburst Benny Hill Toymaker James Robertson Justice Lord Scrumptious Robert Helpmann Child Catcher Barbara Windsor Blonde Davy Kaye Admiral Alexander Doré First Spy Bernard Spear Second Spy Stanley Unwin Chancellor Peter Arne Captain of Guard Heather Ripley Jemima Potts Adrian Hall Jeremy Potts Desmond Llewelyn George Coggins Victor Maddern Junkman Arthur Mullard Cyril, Big Man Gerald Campion Minister Totti Truman Taylor Duchess Kenneth Waller Inventor Gerald Taylor Inventor Richard Wattis Secretary at Sweet Factory (Uncredited) Phil Collins Vulgarian Teen Dick Van Dyke Caractacus Potts Sally Ann Howes Truly Scrumptious Lionel Jeffries Grandpa Potts Gert Fröbe Baron Bomburst Anna Quayle Baroness Bomburst Benny Hill Toymaker James Robertson Justice Lord Scrumptious Robert Helpmann Child Catcher Barbara Windsor Blonde Davy Kaye Admiral Alexander Doré First Spy Bernard Spear Second Spy Stanley Unwin Chancellor Peter Arne Captain of Guard Heather Ripley Jemima Potts Adrian Hall Jeremy Potts Desmond Llewelyn George Coggins Victor Maddern Junkman Arthur Mullard Cyril, Big Man Gerald Campion Minister Totti Truman Taylor Duchess Kenneth Waller Inventor Gerald Taylor Inventor Richard Wattis Secretary at Sweet Factory (Uncredited) Phil Collins Vulgarian Teen Dick Van Dyke Caractacus Potts Sally Ann Howes Truly Scrumptious Lionel Jeffries Grandpa Potts Gert Fröbe Baron Bomburst Anna Quayle Baroness Bomburst Benny Hill Toymaker James Robertson Justice Lord Scrumptious Robert Helpmann Child Catcher Barbara Windsor Blonde Davy Kaye Admiral Alexander Doré First Spy Bernard Spear Second Spy Stanley Unwin Chancellor Peter Arne Captain of Guard Heather Ripley Jemima Potts Adrian Hall Jeremy Potts Desmond Llewelyn George Coggins Victor Maddern Junkman Arthur Mullard Cyril, Big Man Gerald Campion Minister Totti Truman Taylor Duchess Kenneth Waller Inventor Gerald Taylor Inventor Richard Wattis Secretary at Sweet Factory (Uncredited) Phil Collins Vulgarian Teen Dick Van Dyke Caractacus Potts Sally Ann Howes Truly Scrumptious Lionel Jeffries Grandpa Potts Gert Fröbe Baron Bomburst Anna Quayle Baroness Bomburst Benny Hill Toymaker James Robertson Justice Lord Scrumptious Robert Helpmann Child Catcher Barbara Windsor Blonde Davy Kaye Admiral Alexander Doré First Spy Bernard Spear Second Spy Stanley Unwin Chancellor Peter Arne Captain of Guard Heather Ripley Jemima Potts Adrian Hall Jeremy Potts Desmond Llewelyn George Coggins Victor Maddern Junkman Arthur Mullard Cyril, Big Man Gerald Campion Minister Totti Truman Taylor Duchess Kenneth Waller Inventor Gerald Taylor Inventor Richard Wattis Secretary at Sweet Factory (Uncredited) Phil Collins Vulgarian Teen