(1) A building society shall make such arrangements for assessing the adequacy of the security for loans to be secured by the mortgage of freehold or leasehold estate or interest (referred to in this section as "security") as may be reasonably expected to ensure that -

(a) an assessment will be made on the occasion of each loan whether or not any previous assessment was made with a view to further loans,

(b) an assessment shall not be made by a person who is disqualified under this section from making an assessment,

(c) where a borrower takes out a loan, secured against a particular security, for the first time -

(i) in relation to such security, or

(ii) within the building society concerned,

a written report may be made on the value of the security and any factors which may affect its value by a person who is competent to value and who is not disqualified under this section from making a report on the security concerned,

(d) where any further loan is taken out by the same borrower secured against the same security, a building society shall establish such procedure as it considers appropriate for assessing the value of the security for the loan concerned.

(2) The following persons are disqualified from making a report on the value of a security under this section, that is to say -