Hi Louise
When you return the form, it will take up to ten days to send you a face to face appointment. They have to give you at least seven days notice of an appointment, but it may be much longer - it just depends on the availability where you live. After the face to face a decision is often made 10 - 14 days later. But this figure is not set in stone and there have been delays in some areas of the country.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems