Question Author
Thank you for your answers. No-one has told me it is a disciplinary meeting - reading between the lines, body language, tone of voice and general attitude led me to this (admittedly) assumption.
If it is inappropriate to point out that money is being lost by sheer inefficiency, then I will have to accept that. But my own beliefs and standards prevent me from not speaking up.
Thank you for the ACAS link.
I am not a member of any union.
I seem to remember being shown a document when I first joined them 18 months ago, where disciplinary procedures were mentioned. I will certainly, if necessary, ask for this.
Based on what your kind answers, and my own thoughts, I will attend the meeting and if it is anything more than an easily resolved minor matter , I will ask for the matter to be put to me in writing so that I can consider my options and take appropriate actions.
Thanks again