 A major time constraint during filming was the fact that  Alex Wilson (qv) (who plays Brian) was scheduled to leave on  exchange to the Czech Republic. In acknowledgement of such, a few  scenes, such as the big nightclub scenes, were cheated in terms of  Alexs appearances. They were shot indiviually and then edited into  the rest of the scene to make it look as though he was actually  present for filming on these days.