Jack Hulbert. Jack Hulbert was 40 in Jack's the Boy as 'Jack Brown'.
Cicely Courtneidge. Cicely Courtneidge was 39 in Jack's the Boy as 'Mrs. Bobday'.
Winifred Shotter. Winifred Shotter was 27 in Jack's the Boy as 'Ivy'.
Francis Lister. Francis Lister was 33 in Jack's the Boy as 'Jules Martin'.
Peter Gawthorne. Peter Gawthorne was 47 in Jack's the Boy as 'Mr. Brown'.
Ben Field. Ben Field was 56 in Jack's the Boy as 'Mr. Bobday'.
Charles Farrell. Charles Farrell was 31 in Jack's the Boy as 'Martin'.Dickie Valentine. Dickie Valentine was 2 in Jack's the Boy 
O.B. Clarence. O.B. Clarence was 62 in Jack's the Boy as 'Timkins'.
Hal Gordon. Hal Gordon was 38 in Jack's the Boy as 'Man with scarf at accident'.
Arthur Rigby. Arthur Rigby was 31 in Jack's the Boy as 'Police Constable'.
John Singer. John Singer was 8 in Jack's the Boy as 'Boy'.
Walter Forde. Walter Forde was 36 in Jack's the Boy as 'Director'Louis Levy. Louis Levy was 37 in Jack's the Boy as 'Music Director'Leslie Rowson. Leslie Rowson was 28 in Jack's the Boy as 'Director of Photography'
W.P. Lipscomb. W.P. Lipscomb was 44 in Jack's the Boy as 'Writer'
Michael Balcon. Michael Balcon was 36 in Jack's the Boy as 'Producer'Ian Dalrymple. Ian Dalrymple was 28 in Jack's the Boy as 'Editor'Jack Hulbert. Jack Hulbert was 40 in Jack's the Boy as 'Choreographer, Story'Alex Vetchinsky. Alex Vetchinsky was 27 in Jack's the Boy as 'Production Design'T.S. Lyndon-Haynes. T.S. Lyndon-Haynes was 19 in Jack's the Boy as 'Sound Recordist'