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Shared credits
John Gregson averages 6.85, William Hartnell averages 7.09. Apart that suggests 6.97; together they average 7.30, a lift of +0.33.
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.
| The Holly and the Ivy | 1952 | 7.3 | 2,348 | as David Paterson | as C |
| Tomorrow at Ten | 1963 | · | 646 | as Detective Inspector Parnell | as Freddie Maddox |