A conclusion of fact is a finding made by a judge, tribunal or jury about what actually happened, based on the evidence and inferences drawn from it. It distinguishes factual determinations (for example, whether a contract was signed, whether a statement was made, or whether a party was negligent) from conclusions of law, which apply legal rules to those facts.The expression is primarily a descriptive term used in judgments, pleadings and legal argument, rather than a defined statutory concept. Across England and Wales, Scotland, Northern Ireland and Ireland, the usage is broadly consistent: appellate courts generally treat conclusions of fact with deference and will only interfere where there is a material error, no evidence, or the conclusion is plainly wrong or irrational.In civil and criminal litigation, identifying which parts of a judgment are conclusions of fact is critical for framing grounds of appeal, assessing prospects of success, and advising clients. In written submissions, practitioners often distinguish between primary facts, inferences from those facts, and mixed questions of fact and law, all of which can affect the standard and intensity of appellate review.