In Cozens v Brutus  AC 854, at p.861 Lord Reid said in relation to the word "insulting" in s.5 of the Public Order Act 1936:
The meaning of an ordinary word of the English language is not a question of law. The proper construction of a statute is a question of law. If the context shows that a word is used in an unusual sense the court will determine in other words what that unusual sense is. But here there is in my opinion no question of the word "insulting" being used in an unusual sense. It appears to me, for reasons which I shall give later, to be intended to have its ordinary meaning. It is for the tribunal which decides the case to consider, not as law but as fact, whether in the whole circumstances the words of the statute do or do not as a matter of ordinary usage of the English language cover or apply to the facts which have been proved. If it is alleged that the tribunal has reached the wrong decision then there can be a question of law but only of a limited character. The question would normally be whether their decision was unreasonable in the sense that no tribunal acquainted with the ordinary use of language could reasonably reach that decision.
Per Lord Hoffmann in Charter Reinsurance v Fagan  AC 313, at p.391:
I think that in some cases the notion of words having a natural meaning is not a very helpful one. Because the meaning of words is so sensitive to syntax and context, the natural meaning of words in one sentence may be quite unnatural in another. Thus a statement that words have a particular natural meaning may mean no more than that in many contexts they will have that meaning. In other contexts their meaning will be different but no less natural