Ancient Observer,
Thank you for that very detailed explanation to my question which I much appreciate. The ACAS document is a little open to individual interpretation I should have thought. So thank you for pointing out some of the more salient points. I would have think it reasonable to assume that anyone who was used to working within the framework of the document would be well aware of its actual boundaries. Reasonable however was always a very individual word and has often been left to the law courts in its interpretation.