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In the show, Oliver, different accents are used to help portray the social class level of each character.
The two accents used are a British accent and a Cockney accent.
The British accent is a more refined, upper-class accent,
The Cockney accent is harsher and filled with slang.
Characters speaking with a British accent:
Oliver, The Orphans, Mr. Bumble, Mrs. Corney, Mr. Brownlow, Mr. Sowerberry, Mrs. Sowerberry, Charlotte Sowerberry, Mrs. Bedwin
All other characters speak with a Cockney accent.
Click here for a video to help you with a BRITISH accent.