Silence or a 'we are preparing to work with Trump on the basis of respect for his office and pragmatism' would have sufficed. But lapdogs will be lapdogs.
However, after the line of despicable, cowardly, self-debasing clowns the UK electorate has reeled out over the last 15, and especially the last 8 years, none of them with any trace of personal dignity or shame, Lammy is one of the more harmless. He at least can use the weak excuse of his own office here. But didn't have to. I hope EU pols can come up with better than this puke making grovel.
But it's also no different to all the flimsy cardboard cutouts in the US who used to tell the truth about Trump and opposed him. They now line up to kiss his ring piece at Mar A Lago and the WH. First and foremost his Veep.