Normally they allow up to 6 months -- some firms take a few weeks, some the whole 6 months. In VN's case the waters are muddied by the fact that they are in administration and the courts have only recently given the administrators permission to start closing cases -- so there would probably be something of a backlog.
My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014