One of the easiest ways to make the Council's position look good and make the complainants position look weak is to suppress any evidence against the Council and any evidence that supports the complainant.
As a result Local Government Ombudsman often commit the fallacy of suppressed evidence by choosing to ignore evidence that is relevant to a complaint. Of course they can't be expected to look at all of the evidence that might conceivably be relevant because that would be an endless task. But they should never neglect evidence that they know about or evidence that seems quite likely to bear on the issue.
For example a 9 inch step!
Unfortunately they often do and therein lies the injustice.