12.—(1) Every person to whom an Individual Form has been issued under regulation 9(2) shall return the completed form by placing it in the individual return envelope and handing that envelope on the day after census day or as soon thereafter as is reasonably practicable to the person to whom the Household Form was delivered under regulation 8(1)(a).
(2) Every person to whom a form of return has been delivered under regulation 8(1)(a) shall return the completed form, together with any individual return envelopes that have been handed to him under paragraph (1) by posting it or them, as the case may be, on the day after census day or as soon thereafter as is reasonably practicable in the reply-paid envelope supplied.
(3) Where Individual Forms and individual return envelopes have been handed out in accordance with regulation 8(5) or (6) the person responsible for handing out the forms, or any person who has taken his place, shall collect the completed forms and any individual return envelopes on the day after census day or as soon thereafter as is reasonably practicable.
(4) Every person to whom forms of return, individual return envelopes and a reply-paid envelope have been delivered under regulation 8(1)(b) shall return the completed Communal Establishment Form, together with any completed Individual Forms, and any individual return envelopes that have been collected by him under paragraph (3), by posting it or them as the case may be, on the day after census day or as soon thereafter as is reasonably practicable in the reply-paid envelope supplied.
(5) The census enumerator shall make arrangements for the collection of completed Communal Establishment Forms together with any completed Individual Forms and any individual return envelopes including those collected under paragraph (3) from every person to whom Communal Establishment Forms and Individual Forms, and individual return envelopes, but not a reply-paid envelope, were delivered under regulation 8(1)(b).
(6) The Registrar General shall make arrangements for the collection of completed Communal Establishment Forms together with any completed Individual Forms and any individual return envelopes including those collected under paragraph (3) from every person to whom Communal Establishment Forms and Individual Forms, and individual return envelopes were delivered under regulation 8(4)(a).
(7) The Registrar General shall make arrangements for the collection of a completed Communal Establishment Form from the person to whom such a form was delivered under regulation 8(4)(b) and for the collection of completed Individual Forms made by persons in places mentioned in Group VIII in Schedule 1 to the Census Order.
(8) The Registrar General may make such other arrangements for the collection of the particulars prescribed by the Census Order to be stated in the returns, as he thinks fit.