It would be a much better idea to align closely with the EU and to be as detached as possible from the US.
If Trump visits, entertain him with a laser pointer or gossip about old queen Bess. But be aware that he'll try to enlist British support for crimes against humanity and treachery against allies. Being a middleman in such a situation is immoral and potentially suicidal. Under no circumstances should you sing nostalgic refrains of "Down at the Old Blair and Bush." That was a catastrophic shitshow that exposed Blair as the soulless weasel that he is, and caused the deaths of half a million Iraqi civilians. Don't help Trump beat that score.
The only winning strategy is to ride out the storm until the raging psychopath blows a gasket. Not that his VP, the Hamster from Hell, is any better.