Anachronisms: Sydney Carton attends Christmas Eve services ca. 1780 during which "Hark, the Herald Angels Sing" is sung to music by Felix Mendelssohn (1809-1847), and John Francis Wade's Latin hymn, "Adeste fideles," is sung in Frederick Oakley's (1802-1880) translation as "O Come, All Ye Faithful."
Anachronisms: Close up of a paper reporting arrest of Charles Darnay shows a Reuters report. The action takes place in 1785...Paul Reuter was born in 1816 and did not set up his eponymous news agency until 1850.