Trying to beat the summer heat, Dr. Brown takes all out to London on Christmas Eve 1845, where they encounter citizens who may have inspired Charles Dickens characters in A Christmas Carol, Oliver Twist, David Copperfield, and others.
| Actor | Role |
|---|---|
 David KaufmanMartin Seamus 'Marty' McFly (voice) | Martin Seamus 'Marty' McFly (voice) |
 Dan CastellanetaDr. Emmett Brown (voice) | Dr. Emmett Brown (voice) |
 Mary SteenburgenClara Clayton Brown (voice) | Clara Clayton Brown (voice) |
 Thomas F. WilsonBiff H. Tannen (voice) | Biff H. Tannen (voice) |
 Bill NyeHimself | Himself |