It's impossible to give you a definitive answer on this one as there does some to be some variation across the country, and the time also seems to vary depending on whether it is a transfer from DLA to PIP or a PIP review. If you are going to asked to attend a face to face interview this can often happen within 2 - 6 weeks.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems
