(a)a person is convicted of an offence to which this subsection applies, and
(b)the penalty points to be taken into account on that occasion number twelve or
more,the court must order him to be disqualified for not less than the minimum
period unless the court is satisfied, having regard to all the circumstances, that
there are grounds for mitigating the normal consequences of the conviction and
thinks fit to order him to be disqualified for a shorter period or not to order him
to be disqualified.
(a)six months if no previous disqualification imposed on the offender is to be
taken into account, and
(b)one year if one, and two years if more than one, such disqualification is to
be taken into account;and a previous disqualification imposed on an offender is
to be taken into account if it was for a fixed period of 56 days or more and
was imposed] within the three years immediately preceding the commission of
the latest offence in respect of which penalty points are taken into account under
section 29 of this Act.