On Thu, 22 Feb 2018 09:29:36 +0000, Raymond Brown <[log in to unmask]> wrote:

>The shift of [θ] -> [f] is, indeed, widespread in colloqiual British
>speech, as is the shift of [ð] -> [v] when medial or final.  When
>initial [ð] seems either to shift to [d] or fall silent.  

But Britainese will never have word-initial [ð], right?  Lenition of Latin /d/ can't act in initial position, and in Ingvaeonic the */d/~/ð/ phoneme was [d] when in initial position.  On the other hand */g/~/ɣ/ seems to have been [ɣ] initially in Ingvaeonic, given that this survives in Dutch (and in OE when palatalised), so Britainese might take on some transient initial [ɣ], which would presumably vanish like all other [ɣ].

Oh, also, given that /θ/ is in now, presumably _theatr_ will be formal /θə'atr/, informal /θatr/, so don't forget to change that on the page discussing hiatus...