The Scriptorium font foundry makes many (roughly) similar fonts.

http://www.dafont.com/the-scriptoriu...t=SWEENEY+TODD

One such would be Captain Kidd
http://www.dafont.com/captain-kidd.f...t=SWEENEY+TODD

Another is Scurlock
http://www.dafont.com/scurlock.font?text=SWEENEY+TODD

The top link loads all their fonts on Dafont.