No restriction in force under section 9 shall apply to erection or making of a building or excavation or to the construction, formation or laying out of any means of access or works begun before the appointed day referred to in section 9.
(2) No restriction in force under section 9 except restriction as to the construction, formation or laying out of means of access, shall apply to any land forming part of a 11 burial or cremation ground or other place for disposal of dead, being the land which has, before the passing of this Act, been used for such purpose.
(3) No restriction in force under section 9 shall apply to any excavation or works necessary in connection with any drains, ditches, or other drainage works for agricultural purposes or to any works necessary for the repair, renewal, enlargement or maintenance of any sewer, drain, electric line, pipe, duct, or other apparatus, constructed in or upon the land before the date on which the restriction came into force or with the consent of the Highway Authority on or after that date.