Shared credits
Val Guest averages 6.28, Moore Marriott averages 6.90. Apart that suggests 6.59; together they average 7.30, a lift of +0.71.
Lift is the average of their films together minus the mean of their two career averages.
Dot size shows IMDb votes; lines are rolling five-film averages. Films with fewer than 1,000 votes are left out.
| Oh, Mr. Porter! | 1937 | 7.4 | 2,009 | Writer | as Jeremiah Harbottle |
| Old Bones of the River | 1938 | · | 295 | Writer | as Jerry Harbottle |
| Convict 99 | 1938 | · | 588 | Writer | as Jerry, The Mole |
| Ask a Policeman | 1939 | 7.2 | 1,132 | Writer | as Harbottle |
| Where's That Fire? | 1939 | · | 467 | Writer | as Jeremiah Harbottle |
| Back-Room Boy | 1942 | · | 350 | Writer | as Jerry |
