The UK cinema version has an alternate electrocution torture sequence. In the original version, Neeson stabs two metal spikes into the legs of his hostage and connects the jump leads to them. In the UK version, he simply attaches the leads to the metal chair. This is completely different footage redone to secure a lower rating.
Some of the shoot outs, the torture scene and some fisticuffs have been shortened in length for the film's US release to secure a PG-13 rating.