Hall appeared in more Stan Laurel and Oliver Hardy movies than any other actor, including Mae Busch, Billy Gilbert or James Finlayson.
Immigrated to the United States in 1920.
In most of his appearances in the Stan Laurel and Oliver Hardy films, Hall doesn't have a lot of dialogue, and what lines he has are usually growled or barked angrily at either Laurel or Hardy. That was to disguise his British accent, which was more pronounced than Laurel's. Laurel thought it would be a bit too implausible and distract from the scene to have two Englishmen fighting in the middle of an American comedy, so he had Hall disguise his voice whenever possible (although there are times when his English accent is quite obvious).