Before he was taking down on corruption charges, Judd had assigned DI Regan the case of a gang of bank robbers. With Judd out of the picture, the Flying Squad keep the case as a mark of respect just as the robberies become more violent than ever, with the latest getaway leaving a trial of bodies in their wake. With precious few leads, Regan and his team get to work, all too aware that it is only a matter of time before the gang strike again.
In a way Life on Mars has helped and hindered The Sweeney for viewers looking back on it with little knowledge of it the first time around. I was far too young for the series when it was aired and never bothered with it when it was repeated later in our multichannel world. Life on Mars has affectionately referenced the world of The Sweeney and this has meant that, although I am now aware of the genre, I'm also less likely to take it as seriously as it was intended. However watching this film it is evident that The Sweeney didn't take itself too seriously either and it appears to be enjoying its 70's excess and tough non-PC characters just as much as Life on Mars did. The air of humour is obvious but it doesn't take away from the tough tone that the majority has to it.
Of course this is not to say that the film itself is much cop and personally I didn't think much of it once the fun retro novelty of the film had worn off. The plot is a bit too thin to stretch to the feature-length running time and the strain does show at many points. This also means that it moves too slowly at times and loses the sense of urgency that it has in its better moments. The cast offer little but the touch male of the period. Looking back it is odd to see Thaw, Waterman, Elliott, Hawthorne and others in this type of role but, within the context of this film, they do enough to carry it.
Like my fellow reviewer Theo already said though, at least it does seem to be common with the original tone of the series, for better or worse. The novelty value got me into it and the touches of humour and tough style were more or less sufficient to make it entertaining, but regardless it is what it is.