After the opera singer's death in 2007, Miller found impersonating work scarce and is now employed as a station guard by Virgin Trains, Metro reports.
However, Miller has found a way to combine both jobs, regularly serenading commuters at Lichfield Trent Valley, Staffordshire with his rendition of Pavarotti's classic 'Nessun Dorma'.
Commuter Polly Thompson, 26, commented: "He really makes my morning. It's a good way to start your day."
Miller has been nicknamed Pav by his colleagues and is often asked by commuter fans for a photograph.
Despite his popularity, he said that his daughter will not allow him to sing at her wedding later this year, explaining: "She prefers Coldplay to opera and it is her special day, so I'm not arguing."
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Watch the Pavarotti impersonator below: