Grounds of complaint
(1) The grounds for making action by a building society or connected undertaking subject to investigation under the scheme must be that the action constitutes -
(a) in the case of a building society, a breach of the society's obligations under this Act, its rules or any contract, or
(b) in the case of a connected undertaking, a breach of the undertaking's obligations under its rules (if any) or any contract, or
(c) unfair treatment, or
(d) maladministration, or
(e) a decision to which sub-paragraph (2) below applies, or action consequential on such a decision,
in relation to the complainant and has caused him pecuniary loss or expense or inconvenience.
(2) This sub-paragraph applies to any decision in connection with the provision of a relevant service which is made otherwise than in the legitimate exercise of commercial judgment.
Permissible exclusions from investigation
2. A scheme must not exclude action from investigation on any other than t