Maniac is a 2012 France/USA crime horror by Franck Khalfoun.
With Elijah Wood, America Olivo, Sammi Rotibi. 
It has now been passed 18 uncut for strong bloody violence for:
Perhaps a notable uncut rating as the response from film festival screenings was that it was very likely to be cut.
The film has also been mentioned as a possible first victim for the BBFC’s change of guidelines on the subject of violence and sexual violence. The BBFC listed an extended set of factors to be taken into account when considering sexual violence. The press release about the change of rules gave few clues about the practical effects of the rule change, so hopefully the uncut release of Maniac is an indication that the rules haven’t “tightened up” quite as much as the tabloid press suggested.
There seem to be two running times noted for the film, 89 and 93 minutes. However uncut festival screenings were amongst those noted as 89 minutes so perhaps just technical differences on how it is projected.
Melon Farmers Blog 