“The most significant lessons to be drawn from the authorities as applied to a case of this kind seem to be the rather obvious ones, that this is a conversational medium; so it would be wrong to engage in elaborate analysis of a 140 character tweet; that an impressionistic approach is much more fitting and appropriate to the medium; but that this impressionistic approach must take account of the whole tweet and the context in which the ordinary reasonable reader would read that tweet. That context includes (a) matters of ordinary general knowledge; and (b) matters that were put before that reader via Twitter.”
“[16] … the following material can be taken into account when assessing the natural and ordinary meaning of a publication: i) matters of common knowledge: facts so well known that, for practical purposes, everybody knows them; ii) matters that are to be treated as part of the publication: although not set out in the publication itself, material that the ordinary reasonable reader would have read (for example, a second article in a newspaper to which express reference is made in the first or hyperlinks); and iii) matters of directly available context to a publication: this has a particular application where the statement complained of appears as part of a series of publications – e.g. postings on social media, which may appear alongside other postings, principally in the context of discussions. [17] The fundamental principle is that it is impermissible to seek to rely on material, as "context", which could not reasonably be expected to be known (or read) by all the publishees. To do so is to "erode the rather important and principled distinction between natural and ordinary meanings and innuendos": Monroe -v- Hopkins [40]. When I considered this principle very recently, I explained that the distinction was between "material that would have been known (or read) by all readers and material that would have been known (or read) by only some of them. The former is legitimately admissible as context in determining the natural and ordinary meaning; the latter is relevant only to an innuendo meaning (if relied upon)" (emphasis in original): Hijazi -v- Yaxley-Lennon[2020] EWHC 934 (QB) [14].”