Step 1: Table A Provisions.
In the absence of a company's own Articles of Association, Table A from the Companies Act is applicable. This table mandates that: - A minimum of 1 month must separate consecutive calls.
- Each call cannot exceed 25% of the face value.
- A minimum of 7 days' notice is required for calls.
- Calls must be applied uniformly across all shares of the same class.
Step 2: Valid Provisions.
Consequently, all four provisions (A, B, C, and D) are accurate.
Final Answer: \[\boxed{(A), (B), (C) \text{ and } (D)}\]