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Bob Grant averages 5.87 across 3 rated films as an actor, ahead of Doris Hare at 5.27.
Dot size shows IMDb votes. Films with fewer than 1,000 votes sit on the baseline.
| On the Buses | 1971 | 6.0 | as Jack Harper, Stan's Conductor | as Stan's Mum |
| Mutiny on the Buses | 1972 | 5.8 | as Jack, Stan's Conductor | as Stan's Mum |
| Holiday on the Buses | 1973 | 5.8 | as Jack Harper | as Mrs. Mabel Butler |