Complex sentence: Dixon was performing a copy of Formby Snr's act, using the same songs, jokes, costumes and mannerisms, and billed himself as "The New George Formby", a name which angered Eliza and Formby even more.
Split into simpler sentences: Dixon was performing a copy of Formby Snr's act, using the same songs, jokes, costumes and mannerisms. Dixon billed himself as "The New George Formby", a name which angered Eliza and Formby even more.