I suggest that you write to each member of the council and to the clerk to remind them of Section 41 of the Local Government Act 1972, which states:
(1) Minutes of the proceedings of a meeting of a local authority shall, subject to sub-paragraph (2) below, be drawn up and entered in a book kept for that purpose and shall be signed at the same or next suitable meeting of the authority by the person presiding thereat, and any minute purporting to be so signed shall be received in evidence without further proof.
(2) Notwithstanding anything in any enactment or rule of law to the contrary, the minutes of the proceedings of meetings of a local authority may be recorded on loose leaves consecutively numbered, the minutes of the proceedings of any meeting being signed, and each leaf comprising those minutes being initialled, at the same or next suitable meeting of the authority, by the person presiding thereat, and any minute purporting to be so signed shall be received in evidence without further proof.
(3) Until the contrary is proved, a meeting of a local authority a minute of whose proceedings has been made and signed in accordance with this paragraph shall be deemed to have been duly convened and held, and all the members present at the meeting shall be deemed to have been duly qualified.
This requirement should be reflected in the standing orders. If your council is using the current model, it's paragraph 12(c).
If they decide to ignore this, you may wish to notify the internal auditor, either now or during the audit period from 1 April next year.