Although this case isn't directly relevant to Ceri Black's case, the fact that it makes a presumption in favour of freedom of speech is significant and might, I imagine, be relevant in Ceri's case. (NB: I am not a lawyer!) It seems to be part of a trend. If you look back at Kate Scottow's appeal against her conviction under the same law that Ceri is accused of breaking, the judges came down very heavily in favour of free speech:
www.telegraph.co.uk/news/2020/12/17/exclusive-people-must-have-right-offend-without-facing-police/
Here are the relevant paras from that article:
'However, Mr Justice Warby said that had the case “been approached by the Judge in a legally correct manner, it should have been dismissed”.
'The district judge’s approach to section 127(2)c of the Act was said to be "flawed in several aspects" and her reasoning “deficient”.
'Mr Justice Warby stated: “The Judge appears to have considered that a criminal conviction was merited for acts of unkindness and calling others names.”
'But he found there is a “fundamental tension” between "most cases” of harassment by speech that includes "alarming the person or causing the person distress" and Article 10 of the Human Rights Act 1998 which expressly protects speech that offends, shocks and disturbs.'
Of course, Ceri's case is still with the prosecutor - it hasn't reached court yet and probably never will.