I think, until Trump decides enough is enough, he'll continue to go down reasonably well with the MAGA crowd (ignoring the visa fiasco). The Yanks seem to like loud, brash "I speak my mind, even though I'm stupid' kind of folks.
As far as the UK goes, I doubt he will receive a warm reception from many......possibly the Reform voters with dollar sings in their eyes.
Interfering in UK politics will not endear him to many from any political party.