I thought this bit from the article was interesting:
Dr Karin von Hippel, the director of the Royal United Services Institute thinktank, said… “It’s important for the United Kingdom and the EU to mend fences and forge a stronger relationship now that Trump has won… America will no longer be a reliable partner for any European country, including the UK…"
Maybe some Brits will think “why’s he in bloody France then, he should be at the Cenotaph”, and perhaps that’s why other prime ministers chose to be in London.