A. Overlapping front teethcan often be treated by different types of invisible braces.  These are clear plastic and allow for most patients to carry on their lives as normal after a short period of adaptation.  IN my practice these braces start from £1600 per jaw.  Another option that is immediate would be to veneer your teeth.  This does require some removal of tooth surface but the teeth can be straightened within 2 to 3 weeks.  Veneers start form £645 per tooth